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TNPSC Assistant Statistical Investigator 2026 Notification, Online Form & Exam Date
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To crack the TNPSC Assistant Statistical Investigator 2026 exam, understanding the detailed syllabus and exam pattern is mandatory. Aspirants should focus on strategic planning and rigorous time management for each selection phase. Boosting your speed through online mock tests and regular practice is the key to securing a high score in this competitive recruitment. For premium study material and practice sets, follow the expert curated resources on toppersexam.com.
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TNPSC Assistant Statistical Investigator Syllabus 2026, Exam Pattern
TNPSC Assistant Statistical Investigator Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about TNPSC has published notification 2026 for the recruitment of Assistant Statistical Investigator vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
TNPSC Assistant Statistical Investigator Syllabus 2026 - Overview
| Recruitment Authority | Tamil Nadu Public Service Commission |
| Posts Name | Assistant Statistical Investigator |
| Vacancies | 13 |
| Apply Mode | Online |
| TNPSC Exam Date 2026 | 16th September to 19th September 2026 |
| Category | Syllabus and Exam Pattern |
| Job Location | Tamil Nadu |
| Selection Process | Paper I & Paper II |
| Official Website | tnpsc.gov.in |
TNPSC Assistant Statistical Investigator Syllabus 2026
Paper I :-
Part A: Tamil Eligibility Test :
Unit I Grammar (25 questions) :
Writing by separating letters, writing together, joining letters, joining lines - difference between kuril and nedil, difference between lakara, lakara, lakara, difference between nakara, nakara, difference between rakara, rakara, difference between rakara, different letters, recognizing cursive letters - recognizing singular and plural letters.
Word root recognition - Identifying the verb stem, adverb, adverb participle, noun, and noun types from the root word. Identifying Tamil words, antonyms, verb spelling errors, and spelling mistakes. Identifying the difference between two verbs.
Unit II: Vocabulary (15 questions) :
(i) Identifying antonyms, one word, one language, finding the correct meaning, multiple words giving the same meaning, finding the wrong word, arranging words in alphabetical order. Words that indicate one meaning, multilingual, two meanings, spoken language, written language. Knowing both the meaning and the synonym of a word.
(ii) Choosing the correct word to write in the space provided (e.g.) Going to school and getting education Speciality (studying, writing) If it appears in the sky, it will rain (mugil, star) Choosing the appropriate object (e.g.) Media Communication device (news and communication device). Society People's group [People's group meeting] Write the abbreviation of place names. (e.g.) Puducherry Puduwai, Mannargudi Mannai, Mylapore - Mayilai; Correct the error (e.g.) Combining pure Tamil words equivalent to one colloquial word (e.g.) Vethil Vetillai Nakkaali Chaiyar
(iii) Correction of errors in speech acts (e.g.) It rained yesterday. Forming new words by combining words and, or. By, then, until, this is not it. However, however, thus Inserting the word in brackets in the appropriate place (therefore because, therefore as, so, until, after) (e.g.) I went to the forest and therefore I saw the tiger I will play until the evening is over After completing the exam, we can go on a trip. A letter that gives meaning (e.g.) Aapasu Eekodu Thai month fire: Name a word that gives multiple meanings (e.g.) Kamala Ganjam Mulari Bangayam These words refer to lotus
Unit III: Writing Skills (15 questions) :
(i) Arranging words to form sentences - Types of sentences - Verb, Infinitive, Infinitive, Singular, Plural, Correct and Correct Sentences.
(ii) Traditional Tamil: Thinai Traditional High Thinai: Mother came. Mother came, the cows got wet. The cows got wet; Male: Masculine; He came. He came; Feminine She came She came: Many Male: They came They came. One's male: It came. It came Many's male: Birds flew - Birds flew; Time: It rained yesterday It rained yesterday I will come yesterday. I will come yesterday; Young name: Cow calf Goat cub: The dog screamed. The dog barked. Verbal: Basket full of rice. Amount: Crowd of people Crowd of sheep Herd Punctuation marks: Quarter point, semicolon, three-quarter point, full stop Exclamation mark Question mark places.
Unit IV: Art Terms (10 Questions) :
You should know the Tamil words that are directly related to the technical terms of various fields, such as science, medicine, management, law, geography. Technology, media, information technology, etc. (For example, search engine Migration. - Allergy, gug-Gene, and modo. Nautical Mile)
Unit V: Reading Comprehension (15 questions) :
Reading newspaper editorials, front pages, government news, articles, etc. Reading comprehension skills Understanding the meaning of a series of parables Understanding the meaning of a series of proverbs Understanding the meaning of proverbs Understanding the content of documents.
Unit VI: Simple Translation (5 questions) :
Must know Tamil equivalents of English and foreign words Must be able to translate English words in use (Reference: pendrive, printer computer, keyboard). Understand the translation of documents, header files, letters, petitions.
Unit VII: Literature, Tamil Scholars and Tamil Language (15 Questions) :
News related to Thirukkural (twenty chapters only) Morality, patience, encouragement, hospitality, emphasis on virtue. Eigai, Periyarai Subjunctive Verb, Non-attendance, Perspective. Love, education, neutrality, morality, nobility, character, friendliness, non-judgment, grace. Quotes - News related to religious books (Naladiyar. Naanmanikkadigai, Proverb Nanuroo Mudhumozhikanchi. Trikadugam, Innanalpadu. Sirupanchamoolam, Elathi, Avvaiyar songs) - News related to ancient Tamil languages, special Dravidian languages, Uve. Saminatha Iyer, The. Bomeenatchi Sundaram C. Ilakuvanar, News related to Tamil work, Devanya Pavanar, Agaramathali Pavalareru Perunchithranar, Jiu Pope. Veeramamunivar, News related to Tamil Thondu, News related to Tamil scholars, Pavendar. D.K. Chidambaranathar, Thavathiru Kunrakudi Adikalar Kannadasan, Kayide Millath Tara Bharathi. Velunachiyar Pattukkottai Kalyanasundaram Mudiyarasan Tamil Oli Ruthrangankannar K.V.A. Jaganthathar, Namakkal poet.
PART B: General Studies (Degree Standard) :
UNIT I: General Science (5 Questions) :
Scientific knowledge and scientific temper - Power of reasoning - Rote learning vs conceptual learning - Science as a tool to understand the past, present, and future; Nature of universe - General scientific laws– Mechanics - Properties of matter, force, motion, and energy - Everyday application of the basic principles of mechanics, electricity and magnetism, light, sound, heat, nuclear physics, laser, electronics, and communications; Elements and compounds, acids, bases, salts, petroleum products, fertilizers, pesticides; Main concepts of life science, classification of living organisms, evolution, genetics, physiology, nutrition, health and hygiene, human diseases; Environment and ecology; Latest inventions in science and technology; Current affairs.
UNIT II: Geography of India (5 Questions) :
Location - Physical features - Monsoon, rainfall, weather and climate - Water resources - Rivers in India - Soil, Minerals and Natural Resources - Forest and Wildlife - Agricultural pattern; Transport –Communication; Social Geography – Population density and distribution - Racial, linguistic groups and major tribes; Natural calamity - Disaster management; Environmental pollution - Reasons and preventivemeasures - Climate change - Green energy; Geographical landmarks; Current affairs.
UNIT III: History, Culture of India, and Indian National Movement (10 Questions) :
Indus Valley Civilization - Guptas, Delhi Sultans, Mughals, and Marathas - Age of Vijayanagaram and Bahmani Kingdoms - South Indian History; National Renaissance - Early uprising against British rule - Indian National Congress - Emergence of leaders – B.R.Ambedkar, Bhagat Singh, Bharathiar, V.O.Chidambaranar, Jawaharlal Nehru, Kamarajar, Mahatma Gandhi, Maulana Abul Kalam Azad, Thanthai Periyar, Rajaji, Subash Chandra Bose, Rabindranath Tagore, and others; Different modes of agitation: Growth of Satyagraha and Militant Movements; Communalism and Partition; Change and continuity in the socio-cultural history of India; Characteristics of Indian Culture, Unity in Diversity – Race, Language, Custom; India as a secular state, Social harmony; Prominent personalities in various spheres– Arts, Science, Literature and Philosophy
UNIT IV: Indian Polity (15 Questions) :
Constitution of India - Preamble to the Constitution - Salient features of the Constitution - Union, State and Union Territory - Citizenship, Fundamental Rights, Fundamental Duties, Directive Principles of State Policy - Union Executive, Union Legislature - State Executive, State Legislature - Local Governments, Panchayat Raj - Spirit of federalism: Centre - State relationships - Election - Judiciary in India – Rule of Law - Corruption in public life – Anti-corruption measures - Lokpal and Lok Ayukta - Right to Information - Empowerment of Women - Consumer Protection Forums, Human Rights Charter; Political parties and political system in India; Current affairs.
UNIT V: Indian Economy and Development Administration in Tamil Nadu (20 Questions) :
Nature of Indian Economy – Five-year plan models - an assessment - Planning Commission and Niti Aayog; Sources of revenue - Reserve Bank of India - Fiscal Policy and Monetary Policy - Finance Commission - Resource sharing between Union and State Governments - Goods and Services Tax; Structure of Indian Economy and Employment Generation, Land Reforms and Agriculture - Application of Science and Technology in Agriculture - Industrial growth - Rural welfare oriented programmes - Social problems - Population, Education, Health, Employment, Poverty; Human Development Indicators in Tamil Nadu and a comparative assessment across the Country – Impact of social reform movements in the socio-economic development of Tamil Nadu - Political parties, and welfare schemes for various sections of people - Rationale behind the reservation policy, and access to the social resources - Economic trends in Tamil Nadu - Role and impact of social welfare schemes in the socio-economic development of Tamil Nadu - Social Justice and social harmony as the cornerstones of socio-economic development; Education and health systems in Tamil Nadu; Geography of Tamil Nadu and its impact on economic growth; Achievements of Tamil Nadu in various fields; e-Governance in Tamil Nadu; Public awareness and General administration - Welfare oriented Government schemes and their utility, Problems in public delivery systems; Current socio-economic issues; Current affairs.
UNIT VI: History, Culture, Heritage, and Socio-Political Movements in Tamil Nadu (20 Questions) :
History of Tamil Society, related archaeological discoveries, Tamil literature from Sangam age till contemporary times - Thirukkural - Significance as a secular literature - Relevance to everyday life, Impact of Thirukkural on humanity, Thirukkural and universal values - Relevance to Socio-politicoeconomic affairs, Philosophical content in Thirukkural; Role of Tamil Nadu in freedom struggle - Early agitations against British Rule - Role of women in freedom struggle; Evolution of 19th and 20th century socio-political movements in Tamil Nadu - Justice Party, Growth of Rationalism - Self Respect Movement, Dravidian Movement, and principles underlying both these movements; Contributions of Thanthai Periyar and Perarignar Anna.
PART C: Aptitude and Mental Ability :-
UNIT I: Aptitude (15 Questions) :
Simplification - Percentage - Highest Common Factor (HCF) - Lowest Common Multiple (LCM) - Ratio and Proportion - Simple interest - Compound interest - Area - Volume - Time and Work.
UNIT II: Reasoning (10 Questions) :
Logical reasoning - Puzzles - Dice - Visual reasoning - Alpha numeric reasoning - Number series.
Part A: Tamil Eligibility Test :
Unit I Grammar (25 questions) :
Writing by separating letters, writing together, joining letters, joining lines - difference between kuril and nedil, difference between lakara, lakara, lakara, difference between nakara, nakara, difference between rakara, rakara, difference between rakara, different letters, recognizing cursive letters - recognizing singular and plural letters.
Word root recognition - Identifying the verb stem, adverb, adverb participle, noun, and noun types from the root word. Identifying Tamil words, antonyms, verb spelling errors, and spelling mistakes. Identifying the difference between two verbs.
Unit II: Vocabulary (15 questions) :
(i) Identifying antonyms, one word, one language, finding the correct meaning, multiple words giving the same meaning, finding the wrong word, arranging words in alphabetical order. Words that indicate one meaning, multilingual, two meanings, spoken language, written language. Knowing both the meaning and the synonym of a word.
(ii) Choosing the correct word to write in the space provided (e.g.) Going to school and getting education Speciality (studying, writing) If it appears in the sky, it will rain (mugil, star) Choosing the appropriate object (e.g.) Media Communication device (news and communication device). Society People's group [People's group meeting] Write the abbreviation of place names. (e.g.) Puducherry Puduwai, Mannargudi Mannai, Mylapore - Mayilai; Correct the error (e.g.) Combining pure Tamil words equivalent to one colloquial word (e.g.) Vethil Vetillai Nakkaali Chaiyar
(iii) Correction of errors in speech acts (e.g.) It rained yesterday. Forming new words by combining words and, or. By, then, until, this is not it. However, however, thus Inserting the word in brackets in the appropriate place (therefore because, therefore as, so, until, after) (e.g.) I went to the forest and therefore I saw the tiger I will play until the evening is over After completing the exam, we can go on a trip. A letter that gives meaning (e.g.) Aapasu Eekodu Thai month fire: Name a word that gives multiple meanings (e.g.) Kamala Ganjam Mulari Bangayam These words refer to lotus
Unit III: Writing Skills (15 questions) :
(i) Arranging words to form sentences - Types of sentences - Verb, Infinitive, Infinitive, Singular, Plural, Correct and Correct Sentences.
(ii) Traditional Tamil: Thinai Traditional High Thinai: Mother came. Mother came, the cows got wet. The cows got wet; Male: Masculine; He came. He came; Feminine She came She came: Many Male: They came They came. One's male: It came. It came Many's male: Birds flew - Birds flew; Time: It rained yesterday It rained yesterday I will come yesterday. I will come yesterday; Young name: Cow calf Goat cub: The dog screamed. The dog barked. Verbal: Basket full of rice. Amount: Crowd of people Crowd of sheep Herd Punctuation marks: Quarter point, semicolon, three-quarter point, full stop Exclamation mark Question mark places.
Unit IV: Art Terms (10 Questions) :
You should know the Tamil words that are directly related to the technical terms of various fields, such as science, medicine, management, law, geography. Technology, media, information technology, etc. (For example, search engine Migration. - Allergy, gug-Gene, and modo. Nautical Mile)
Unit V: Reading Comprehension (15 questions) :
Reading newspaper editorials, front pages, government news, articles, etc. Reading comprehension skills Understanding the meaning of a series of parables Understanding the meaning of a series of proverbs Understanding the meaning of proverbs Understanding the content of documents.
Unit VI: Simple Translation (5 questions) :
Must know Tamil equivalents of English and foreign words Must be able to translate English words in use (Reference: pendrive, printer computer, keyboard). Understand the translation of documents, header files, letters, petitions.
Unit VII: Literature, Tamil Scholars and Tamil Language (15 Questions) :
News related to Thirukkural (twenty chapters only) Morality, patience, encouragement, hospitality, emphasis on virtue. Eigai, Periyarai Subjunctive Verb, Non-attendance, Perspective. Love, education, neutrality, morality, nobility, character, friendliness, non-judgment, grace. Quotes - News related to religious books (Naladiyar. Naanmanikkadigai, Proverb Nanuroo Mudhumozhikanchi. Trikadugam, Innanalpadu. Sirupanchamoolam, Elathi, Avvaiyar songs) - News related to ancient Tamil languages, special Dravidian languages, Uve. Saminatha Iyer, The. Bomeenatchi Sundaram C. Ilakuvanar, News related to Tamil work, Devanya Pavanar, Agaramathali Pavalareru Perunchithranar, Jiu Pope. Veeramamunivar, News related to Tamil Thondu, News related to Tamil scholars, Pavendar. D.K. Chidambaranathar, Thavathiru Kunrakudi Adikalar Kannadasan, Kayide Millath Tara Bharathi. Velunachiyar Pattukkottai Kalyanasundaram Mudiyarasan Tamil Oli Ruthrangankannar K.V.A. Jaganthathar, Namakkal poet.
PART B: General Studies (Degree Standard) :
UNIT I: General Science (5 Questions) :
Scientific knowledge and scientific temper - Power of reasoning - Rote learning vs conceptual learning - Science as a tool to understand the past, present, and future; Nature of universe - General scientific laws– Mechanics - Properties of matter, force, motion, and energy - Everyday application of the basic principles of mechanics, electricity and magnetism, light, sound, heat, nuclear physics, laser, electronics, and communications; Elements and compounds, acids, bases, salts, petroleum products, fertilizers, pesticides; Main concepts of life science, classification of living organisms, evolution, genetics, physiology, nutrition, health and hygiene, human diseases; Environment and ecology; Latest inventions in science and technology; Current affairs.
UNIT II: Geography of India (5 Questions) :
Location - Physical features - Monsoon, rainfall, weather and climate - Water resources - Rivers in India - Soil, Minerals and Natural Resources - Forest and Wildlife - Agricultural pattern; Transport –Communication; Social Geography – Population density and distribution - Racial, linguistic groups and major tribes; Natural calamity - Disaster management; Environmental pollution - Reasons and preventivemeasures - Climate change - Green energy; Geographical landmarks; Current affairs.
UNIT III: History, Culture of India, and Indian National Movement (10 Questions) :
Indus Valley Civilization - Guptas, Delhi Sultans, Mughals, and Marathas - Age of Vijayanagaram and Bahmani Kingdoms - South Indian History; National Renaissance - Early uprising against British rule - Indian National Congress - Emergence of leaders – B.R.Ambedkar, Bhagat Singh, Bharathiar, V.O.Chidambaranar, Jawaharlal Nehru, Kamarajar, Mahatma Gandhi, Maulana Abul Kalam Azad, Thanthai Periyar, Rajaji, Subash Chandra Bose, Rabindranath Tagore, and others; Different modes of agitation: Growth of Satyagraha and Militant Movements; Communalism and Partition; Change and continuity in the socio-cultural history of India; Characteristics of Indian Culture, Unity in Diversity – Race, Language, Custom; India as a secular state, Social harmony; Prominent personalities in various spheres– Arts, Science, Literature and Philosophy
UNIT IV: Indian Polity (15 Questions) :
Constitution of India - Preamble to the Constitution - Salient features of the Constitution - Union, State and Union Territory - Citizenship, Fundamental Rights, Fundamental Duties, Directive Principles of State Policy - Union Executive, Union Legislature - State Executive, State Legislature - Local Governments, Panchayat Raj - Spirit of federalism: Centre - State relationships - Election - Judiciary in India – Rule of Law - Corruption in public life – Anti-corruption measures - Lokpal and Lok Ayukta - Right to Information - Empowerment of Women - Consumer Protection Forums, Human Rights Charter; Political parties and political system in India; Current affairs.
UNIT V: Indian Economy and Development Administration in Tamil Nadu (20 Questions) :
Nature of Indian Economy – Five-year plan models - an assessment - Planning Commission and Niti Aayog; Sources of revenue - Reserve Bank of India - Fiscal Policy and Monetary Policy - Finance Commission - Resource sharing between Union and State Governments - Goods and Services Tax; Structure of Indian Economy and Employment Generation, Land Reforms and Agriculture - Application of Science and Technology in Agriculture - Industrial growth - Rural welfare oriented programmes - Social problems - Population, Education, Health, Employment, Poverty; Human Development Indicators in Tamil Nadu and a comparative assessment across the Country – Impact of social reform movements in the socio-economic development of Tamil Nadu - Political parties, and welfare schemes for various sections of people - Rationale behind the reservation policy, and access to the social resources - Economic trends in Tamil Nadu - Role and impact of social welfare schemes in the socio-economic development of Tamil Nadu - Social Justice and social harmony as the cornerstones of socio-economic development; Education and health systems in Tamil Nadu; Geography of Tamil Nadu and its impact on economic growth; Achievements of Tamil Nadu in various fields; e-Governance in Tamil Nadu; Public awareness and General administration - Welfare oriented Government schemes and their utility, Problems in public delivery systems; Current socio-economic issues; Current affairs.
UNIT VI: History, Culture, Heritage, and Socio-Political Movements in Tamil Nadu (20 Questions) :
History of Tamil Society, related archaeological discoveries, Tamil literature from Sangam age till contemporary times - Thirukkural - Significance as a secular literature - Relevance to everyday life, Impact of Thirukkural on humanity, Thirukkural and universal values - Relevance to Socio-politicoeconomic affairs, Philosophical content in Thirukkural; Role of Tamil Nadu in freedom struggle - Early agitations against British Rule - Role of women in freedom struggle; Evolution of 19th and 20th century socio-political movements in Tamil Nadu - Justice Party, Growth of Rationalism - Self Respect Movement, Dravidian Movement, and principles underlying both these movements; Contributions of Thanthai Periyar and Perarignar Anna.
PART C: Aptitude and Mental Ability :-
UNIT I: Aptitude (15 Questions) :
Simplification - Percentage - Highest Common Factor (HCF) - Lowest Common Multiple (LCM) - Ratio and Proportion - Simple interest - Compound interest - Area - Volume - Time and Work.
UNIT II: Reasoning (10 Questions) :
Logical reasoning - Puzzles - Dice - Visual reasoning - Alpha numeric reasoning - Number series.
Paper II: Statistics, Mathematics and Economics (Degree Standard)
Unit I: Algebra and Differential Calculus (20 Questions) :
Theory of Equations: Relations between roots and Coefficients – Complex roots – Irrational roots –
Related roots – Transformations of equations – Reciprocal equations.
Matrix Theory: Symmetric – Skew Symmetric – Hermitian – Skew Hermitian – Orthogonal and Unitary
Matrices – Rank of a matrix – Consistency and solutions of Linear Equations – Cayley Hamilton Theorem –
Eigen values and Eigen Vectors.
Differential Calculus: n
th derivative – Leibnitz’s theorem and its applications – Partial differentiation –
Maxima and Minima of functions of two independent variables.
Unit II: Integral Calculus and Differential Equations (20 Questions) :
Integral Calculus: Methods of integration – Properties of definite integrals – Reduction formulae – Double
Integrals –triple integrals – Applications to area, surface and volume – simple problems.
First order but of higher degree equations – solvable for p, solvable for x, solvable for y – simple problems.
Second order differential equations with constant coefficients with particular integrals for eax,, cosmx,
sinmx, eax sinmx – simple problems.
Partial Differential equations: Formation of partial differential equations by eliminating arbitrary constants
and arbitrary functions – First order P.D.E. – complete integral – Singular integral – general integral –
standard types f(p,q) = 0, f(z,p,q) = 0, f(x,y,p,q)=0, Clairaut’s form and Lagrange’s equations – simple
problems.
Unit III: Vector Calculus and Operations Research (25 Questions) :
Vector Differentiation: Gradient, divergence, curl, directional derivative, unit normal to a surface.
Vector Integration: line, surface and volume integrals – Applications of Gauss, Stokes and Green’s
Theorems – simple problems.
Linear programming: Formulation – graphical solution – simplex method – Big-M method –
Transportation problem – Assignment problem.
PERT and CPM: project network diagram – Critical path – PERT computations.
Inventory models: Basic concepts – EOQ models (i) Uniform demand rate infinite production rate with
no shortages models (ii) Uniform demand rate with finite production rate with no shortages models.
Unit IV: Descriptive Statistics and Fitting of Simple equations (20 questions) :
Introduction to Statistics, Uses, scope and limitations - Collection, Classification and Tabulation of data -
Diagrammatic and Graphical representations of Data – Measures of location, dispersion, skewness and
kurtosis – Bivariate data- Scatter diagram – Correlation, Partial correlation and regression – Fitting of
Linear and quadratic equations by the method of least squares.
Unit V: Probability and Statistical Inference (25 questions) :
Introduction to Probability - Addition, Multiplication and Baye’s Theorems and simple applications. Random
variables and Expectation– Univariate Probability distributions – Binomial, Poisson, Geometric, exponential
and normal distributions (Mean & Variance). Sampling Techniques – Simple Random Sampling –
Stratified and Cluster (Single Stage) - Estimation – Properties, Point Estimation by the method MLE. Tests
of Hypothesis – Important terminology – Test procedures for large and small samples (z, t, Chi-square, F).
Unit VI: Time Series, Index Numbers and Statistical computing using MS-Excel (20 Questions) :
Time series – Components – Determination of Trend (Moving Average, Linear Trend by LSE) – Index
Numbers – Construction of Simple, weighted Cost of living index numbers.
Statistical Computing using MS-Excel: Introduction to MS-Excel – MS-Excel Options using Excel
Shortcuts – Link the Data in Rows, Columns and Sheet - Functions: Logical Functions -Math and Statistical
Functions – Regular Charts-Plotting Density Function and Distribution Function.
Unit VII: Micro Economics (15 Questions) :
(a) Definition, Scope and Importance of Micro Economics – Law of Demand – Elasticity of Demand –
Utility Analysis – Consumer Surplus. (b) Production Function – Factors of Production – Producer’s Surplus
– Economies of scale – Cost and Revenue curves in the Short-run and Long-run – Welfare Criteria – Adam
Smith, Bentham, Marshall, Pigou and Kaldor.
Unit VIII: Macro Economics (15 Questions) :
Definition, Nature and Scope of Macro Economics – Circular flow of Income in an Open Economy –
National Income Accounting – Definition – Concepts: GNP, NNP, GDP, NDP, Personal Income, Per
Disposable Income & Personal Savings, Per Capita Income – Keynesian Psychological Law of
Consumption – Investment function – Marginal Efficiency of Capital – Multiplier – Accelerator.
Inflation – Deflation – CPI – WPI – Phases of Trade cycle.
Unit IX: Stabilisation Policies (20 Questions) :
(a) Monetary Policy: Barter System – Demand for and supply of money – Functions of money, Functions of
Central and Commercial Banks – Money Multiplier – Monetary Policy Instruments – SLR, CRR, OMO &
LAF – Functions of Money Market – Capital Market.
(b) Fiscal Policy: Taxation – Types of Taxes – Canons of Taxation – Public Expenditure – Causes and
Growth – Types of Public Expenditure – Public Debt – Internal and External Public Debt - Budget – Deficit
and deficit financing – FRBM (Fiscal Regulation and Budgetary Management) – Fiscal Federalism.
Unit X: Indian Economy: (20 Questions) :
(a) Agriculture: Contribution of the Agriculture sector to National Income and Employment – Agriculture
Price Policies – Agriculture Statistics – Modern Technology in Agriculture Statistics – Agriculture Finance
and Marketing.
(b) Industry: Contribution of the Industrial Sector to National Income and Employment – MSME and
Large Scale Industries – Industrial Policy Resolutions – Industrial finance.
(c) Service Sector: Contribution of the Services Sector to National Income and Employment –Transport,
Communication and IT Sectors.
(d) Economics of Planning: Five Year Plans – Planning Commission – Finance Commission – NITI
Aayog – Government Welfare and Employment Generation Programmes.
(e) Population: Demographic transition and Demographic Statistics – Poverty Alleviation Programmes
Unit I: Algebra and Differential Calculus (20 Questions) :
Theory of Equations: Relations between roots and Coefficients – Complex roots – Irrational roots –
Related roots – Transformations of equations – Reciprocal equations.
Matrix Theory: Symmetric – Skew Symmetric – Hermitian – Skew Hermitian – Orthogonal and Unitary
Matrices – Rank of a matrix – Consistency and solutions of Linear Equations – Cayley Hamilton Theorem –
Eigen values and Eigen Vectors.
Differential Calculus: n
th derivative – Leibnitz’s theorem and its applications – Partial differentiation –
Maxima and Minima of functions of two independent variables.
Unit II: Integral Calculus and Differential Equations (20 Questions) :
Integral Calculus: Methods of integration – Properties of definite integrals – Reduction formulae – Double
Integrals –triple integrals – Applications to area, surface and volume – simple problems.
First order but of higher degree equations – solvable for p, solvable for x, solvable for y – simple problems.
Second order differential equations with constant coefficients with particular integrals for eax,, cosmx,
sinmx, eax sinmx – simple problems.
Partial Differential equations: Formation of partial differential equations by eliminating arbitrary constants
and arbitrary functions – First order P.D.E. – complete integral – Singular integral – general integral –
standard types f(p,q) = 0, f(z,p,q) = 0, f(x,y,p,q)=0, Clairaut’s form and Lagrange’s equations – simple
problems.
Unit III: Vector Calculus and Operations Research (25 Questions) :
Vector Differentiation: Gradient, divergence, curl, directional derivative, unit normal to a surface.
Vector Integration: line, surface and volume integrals – Applications of Gauss, Stokes and Green’s
Theorems – simple problems.
Linear programming: Formulation – graphical solution – simplex method – Big-M method –
Transportation problem – Assignment problem.
PERT and CPM: project network diagram – Critical path – PERT computations.
Inventory models: Basic concepts – EOQ models (i) Uniform demand rate infinite production rate with
no shortages models (ii) Uniform demand rate with finite production rate with no shortages models.
Unit IV: Descriptive Statistics and Fitting of Simple equations (20 questions) :
Introduction to Statistics, Uses, scope and limitations - Collection, Classification and Tabulation of data -
Diagrammatic and Graphical representations of Data – Measures of location, dispersion, skewness and
kurtosis – Bivariate data- Scatter diagram – Correlation, Partial correlation and regression – Fitting of
Linear and quadratic equations by the method of least squares.
Unit V: Probability and Statistical Inference (25 questions) :
Introduction to Probability - Addition, Multiplication and Baye’s Theorems and simple applications. Random
variables and Expectation– Univariate Probability distributions – Binomial, Poisson, Geometric, exponential
and normal distributions (Mean & Variance). Sampling Techniques – Simple Random Sampling –
Stratified and Cluster (Single Stage) - Estimation – Properties, Point Estimation by the method MLE. Tests
of Hypothesis – Important terminology – Test procedures for large and small samples (z, t, Chi-square, F).
Unit VI: Time Series, Index Numbers and Statistical computing using MS-Excel (20 Questions) :
Time series – Components – Determination of Trend (Moving Average, Linear Trend by LSE) – Index
Numbers – Construction of Simple, weighted Cost of living index numbers.
Statistical Computing using MS-Excel: Introduction to MS-Excel – MS-Excel Options using Excel
Shortcuts – Link the Data in Rows, Columns and Sheet - Functions: Logical Functions -Math and Statistical
Functions – Regular Charts-Plotting Density Function and Distribution Function.
Unit VII: Micro Economics (15 Questions) :
(a) Definition, Scope and Importance of Micro Economics – Law of Demand – Elasticity of Demand –
Utility Analysis – Consumer Surplus. (b) Production Function – Factors of Production – Producer’s Surplus
– Economies of scale – Cost and Revenue curves in the Short-run and Long-run – Welfare Criteria – Adam
Smith, Bentham, Marshall, Pigou and Kaldor.
Unit VIII: Macro Economics (15 Questions) :
Definition, Nature and Scope of Macro Economics – Circular flow of Income in an Open Economy –
National Income Accounting – Definition – Concepts: GNP, NNP, GDP, NDP, Personal Income, Per
Disposable Income & Personal Savings, Per Capita Income – Keynesian Psychological Law of
Consumption – Investment function – Marginal Efficiency of Capital – Multiplier – Accelerator.
Inflation – Deflation – CPI – WPI – Phases of Trade cycle.
Unit IX: Stabilisation Policies (20 Questions) :
(a) Monetary Policy: Barter System – Demand for and supply of money – Functions of money, Functions of
Central and Commercial Banks – Money Multiplier – Monetary Policy Instruments – SLR, CRR, OMO &
LAF – Functions of Money Market – Capital Market.
(b) Fiscal Policy: Taxation – Types of Taxes – Canons of Taxation – Public Expenditure – Causes and
Growth – Types of Public Expenditure – Public Debt – Internal and External Public Debt - Budget – Deficit
and deficit financing – FRBM (Fiscal Regulation and Budgetary Management) – Fiscal Federalism.
Unit X: Indian Economy: (20 Questions) :
(a) Agriculture: Contribution of the Agriculture sector to National Income and Employment – Agriculture
Price Policies – Agriculture Statistics – Modern Technology in Agriculture Statistics – Agriculture Finance
and Marketing.
(b) Industry: Contribution of the Industrial Sector to National Income and Employment – MSME and
Large Scale Industries – Industrial Policy Resolutions – Industrial finance.
(c) Service Sector: Contribution of the Services Sector to National Income and Employment –Transport,
Communication and IT Sectors.
(d) Economics of Planning: Five Year Plans – Planning Commission – Finance Commission – NITI
Aayog – Government Welfare and Employment Generation Programmes.
(e) Population: Demographic transition and Demographic Statistics – Poverty Alleviation Programmes
TNPSC Assistant Statistical Investigator Exam Pattern 2026
| Paper | Subject | No.of Question | Marks | Duration |
| Paper I | Part A Tamil Eligibility Test | 100 | 150 | 3 Hour |
| Part B General Studies | 75 | 150 | ||
| Part C Aptitude and Mental Ability | 25 | |||
| Paper II | Subject Paper (Assistant Statistical Investigator) | 200 | 300 | 3 Hour |
TNPSC Exam Date 2026 : 16th September to 19th September 2026
Starting Date of Application Form : 27th May 2026
Last Date of Application Form : 25th June 2026
Total Post : 13
TNPSC Assistant Statistical Investigator Exam Free Online Test Series
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