Which of the condition support long run equilibrium in monopolistic competition ?
A
MR = MC, AR = AC
B
P = MC, AR = AC
C
MR = MC = AR = AC
D
AR = MC = AC
Question 3Single Answer
Who explained importance of time element in price determination, for the first time ?
A
Chamberlin
B
Stigler
C
Mrs. Joan Robinson
D
Marshall
Question 4Single Answer
Law of diminishing returns begins to operate when :
A
Total product begins to rise
B
Total product begins to fall
C
Marginal Product begins to rise
D
Marginal product begins to fall
Question 5Single Answer
Consider the following statements regarding Edgeworth Duopoly model :
I. It takes as given output decision of rival.
II. It takes as given price decision of rival
III. It is an explanation of price rigidity of thease , the correct answer is :
A
Only Statement I is true
B
Both I & II are true
C
Both II & III are true
D
Only III is true
Question 6Single Answer
Who distinguished between value in use and value in exchange and gave the famous example of diamonds and water ?
A
Adam smith
B
David Ricardo
C
Alfred Marshall
D
Karl Marx
Question 7Single Answer
When income effect becomes stronger than substitution effect, the labour supply curve will :
A
Slope positively
B
Negatively sloped
C
Bend backward
D
Slope upwards
Question 8Single Answer
Assertion (A) : The concept of supply curve is meaningless for the monopolist.
Reason (R) : Monopolists are price setters ; it does not make reuse to ask what output they will produce at various prices.
A
Codes :
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B
(A) is correct , but (R) is not correct
C
Both (A) and (R) are correct , but (R) is not correct explanation of (A)
D
(R) is correct, but (A) is incorrect
Question 9Single Answer
Predatory pricing policy is designed to :
A
drive competitors out of business
B
maximum profits
C
encourage entrants into the market
D
atain least cost output
Question 10Single Answer
Match items in List-I with items in List-II and select the correct answer from the code given below :
List-I List-II
a. The screening Hypothesis 1. George A. Akerlof
b. Job Market signaling 2. K. J Arrow
c. The problem of moral 3. M. Spencer
hazard in the case
of medical insura
d. The market for lemons 4. Paul W. Miller and Paul A.
Vplcker
A
Codes :
(a) (b) (c) (d)
3 2 4 1
B
2 3 4 1
C
4 3 2 1
D
2 4 3 1
Question 11Single Answer
The cost incurred by the firm in hiring labour is called as :
A
Explicit cost
B
Implicit Cost
C
Marginal Cost
D
Total Cost
Question 12Single Answer
The locus of Pareto optimality in production and consumption is given by :
A
The social Welfare Function
B
The Utility Possibility Curve
C
The Transformation Curve
D
The Grand Utility possibility Curve
Question 13Single Answer
Match items given in List-1 with those in List-II :
List-I List_II
a. Tea and coffee 1. Veblen goods
b. Car and petrol 2. Substitutes
c. Gold and 3. Giffen goods
Diamonds
d. Ragi and Bajra 4. Complementary
A
Codes :
a b c d
2 1 3 4
B
2 4 1 3
C
4 1 2 3
D
4 3 1 2
Question 14Single Answer
Assertion (A) : In the short run under perfect competition, given the market demand and market supply the industry is in equilibrium at that price which clears the market.
Reason (R) : In the long run all the firms in the industry earn profit .
A
Codes :
Both (A) and (R) are true and (R) is the correct explanations of (A)
B
Both (A) and (R) are true , but (R) is not correct explanation of (A)
C
(A) is true , but (R) is false
D
(A) is false , but (R) is true
Question 15Single Answer
Put the following in chronological order on the basis of development :
I. Law of demand
II.Revealed Preference Analysis
III. IIndifference Curve Analysis
IV. Law of Diminishing Marginal Utility
A
I, II, III, IV
B
I, IV, III, II
C
I, II, IV,III
D
I, III, IV, II
Question 16Single Answer
Fiscal deficit less interest payments is called
A
Net fiscal deficit
B
Monetised deficit
C
Primary deficit
D
Budgetary deficit
Question 17Single Answer
How many countries are the members of European Union ?
A
25
B
28
C
26
D
15
Question 18Single Answer
If the mean and variance of a given distribution is 8 and 0.25, then the coefficient of variation will be
A
4 percent
B
8 percent
C
12 percent
D
16 percent
Question 19Single Answer
The doctrine of unbalanced growth was propounded by
I. Hirschman
II. Robert Solow
III. Singer
IV. Ragnar Nurkse
Codes :
A
I and II are correct
B
II and III are correct
C
III and IV are correct
D
I and III are correct
Question 20Single Answer
Match List-I with List-II and show the relation between trade cycle and profit by selecting correct codes given below
List-I List-II
a. Recession I. Low
b. Boom II. Positive
c. Recovery III. Highest level
d. Depression IV. Negative
A
Codes :
a b c d
III IV I II
B
I III II IV
C
IV III II I
D
I II III IV
Question 21Single Answer
Under Cournot Model of Duopoly, each duopolist will produce :
A
half the output
B
one-fourth of the output
C
one-six of the output
D
one-third of the total output
Question 22Single Answer
As long as the substitution effect dominates the income effect, the labour supply curve is :
A
negatively sloped
B
positively sloped
C
bend backward
D
shifting towards left
Question 23Single Answer
Assertion (A) : Monopoly is Pareto inefficient .
Reason (R) : It would be possible to change the allocation of resources to make the amount of Income he would be prepared to pay in exchange of the reduction in price
A
Codes:
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B
(A) is correct, but (R) is not correct
C
Both (A) and (R) are correct, but (R) is incorrect explanation of (A)
D
(R) is correct, but (A) is incorrect
Question 24Single Answer
If MPk/MPk does not change with any proportionate change in labour and capital then the production function is :
A
Linear
B
Non-Linear
C
Homogeneous
D
Homothetic
Question 25Single Answer
Match the items in the List-I with items in List-II select the correct answer from the code given below :
List-I List-II
I. Agency Theory of 1. O.E. Williamson
Firm
II. X-inefficiency 2. M.C. Jenson and W. J. Meckling
III. The Utility 3. Wilfredo Pareto
Maximisation
Model
IV. Edgeworth box 4. Harvey Leibenstein
Diagram first
Used by
A
Codes:
I II III IV
3 2 1 4
B
2 4 1 3
C
2 3 4 1
D
3 4 1 2
Question 26Single Answer
The revealed preference theory of consumer’s behavior is based on :
A
Consistency
B
Strong ordering
C
Positive income elasticity of demand
D
All of the above
Question 27Single Answer
An individual’s supply curve for labour will bend backwards when :
A
The substitution effect of wage rate increases is higher than income effect
B
The income effect of wage rate increases is negative and higher than the substitution effect
C
Leisure is Giffen good
D
The substitution and income effect of wage rate increases reinforce each other
Question 28Single Answer
The short run supply curve of a firm under perfect competition is the same as the :
A
Marginal cost curve
B
marginal cost curve above the average variable cost curve
C
average variable cost curve
D
Average total cost curve
Question 29Single Answer
Match List-I with List-II and select the correct answer from the codes given below : List-I List-II
a. Quasi rent 1. Hicks
b. Elasticity of substitution 2. Chamberlin
c. Monopolistic 3. Neumann and Morgenstern
d. Theory of Games 4. Marshall Codes :
A
A b c d
4 1 3 2
B
2 1 4 3
C
2 1 3 4
D
4 1 2 3
Question 30Single Answer
The difference between the value of marginal product and the marginal revenue product arises only if :
A
Average revenue is not equal to marginal revenue
B
Average cost is not equal to marginal revenue
C
Total revenue is not equal to total cost
D
Average cost is not equal to average revenu.
Question 31Single Answer
The Opportunity Cost Curve assumes that
A
Labour is the only factor of production
B
The price or a cost of a commodity can be inferred from its labour content
C
Labour is homogeneous
D
None of the above
Question 32Single Answer
Hedging refers to ;
A
the acceptance of a foreign exchange risk
B
covering of a foreign exchange risk
C
foreign exchange speculation
D
foreign exchange arbitrage
Question 33Single Answer
An increase in the marginal propensity to import :
A
has the same effect upon the multiplier as an increase in the MPC
B
has no effect upon the multiplier
C
will increase the value of the multiplier
D
will decrease the value of the multiplier
Question 34Single Answer
The price elasticity of demand is equal to one for a demand curve, which is:
A
horizontal line
B
vertical line
C
rectangular hyperbola
D
downward moving line
Question 35Single Answer
The third moment around the mean is useful to measure
A
central tendency
B
Hirschman
C
peakedness
D
symmetry
Question 36Single Answer
For downward movement along the isoquants , MRTS of labour per unit of capital (MRTSL,K) is given by:
A
–dK/dL
B
dK/dL
C
dL/dK
D
-dL/dK
Question 37Single Answer
Which of the following is not instructional material ?
A
Over Head Projector
B
Audio Casset
C
Printed Material
D
Transparency
Question 38Single Answer
Which of the following is the most significant in stabilization policy ?
A
Private investment
B
Inventory investment
C
Autonomous investment
D
Public investment
Question 39Single Answer
The concept of vicious circle of poverty is associated with :
A
Kindleberger
B
Schumpeter
C
Ragnar Frish
D
Gunnar Myrdal
Question 40Single Answer
Solow built his model as an alternative to :
A
Kaldor’s model of growth
B
Ranis-Fei model of growth
C
Harrod-Domar model of growth
D
Meade’s model of growth
Question 41Single Answer
Green Box subsidies under WTO are allowed because they are considered to be :
A
Minimally trade distorting
B
higher among developed and relatively lower for developing counties
C
They are confined to agriculture sector
D
They are related to GATS provision
Question 42Single Answer
Which one of the following is not reserved for public sector ?
A
Atomic energy
B
Railways
C
Insurance
D
Port Trust of India
Question 43Single Answer
The rate at which the Central Bank discounts the bills of commercial banks is called :
A
Discount Rate
B
Bill Rate
C
Interest Rate
D
Lending Rate
Question 44Single Answer
If the economy is the liquidity trap then
A
Fiscal policy will be more effective
B
Monetary policy will be more effective
C
Crowding our effect will make fiscal and monetary policy effective
D
None of the above
Question 45Single Answer
If the price consumption curve of a commodity is bending backwards , then the commodity must be :
A
An inferior commodity
B
A perfectly elastic commodity
C
Normal commodity
D
Giffen goods
Question 46Single Answer
Marginal Revenue of a Monopoly firm is less than the price, Because :
A
Demand curve has a positive slope
B
Demand curve has a negative slope
C
Monopolist is in equilibrium
D
Monopolist incurs losses
Question 47Single Answer
For an inferior goods , income consumption curve and Engles curves are :
A
Positively sloped
B
Negative sloped
C
Are the same
D
Income consumption curve positively sloped and the Engles curve is negative sloped
Question 48Single Answer
The classical economists focused on the role of money as :
A
Medium of exchange
B
medium of distribution
C
wealth
D
link between present and future
Question 49Single Answer
If the demand for money is perfectly interest inelastic , the LM schedule will be :
A
Upward sloping
B
Downward sloping
C
Horizontal line
D
vertical line
Question 50Single Answer
Harrod –Domer model of economic growth is based on the equilibrium between
A
Income generation and productive capacity creation
B
Equilibrium between income and consumption
C
Equilibrium between income and consumption
D
None of the above
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Economic & Statistics
Question 51Single Answer
Which of the following statement is true?
A
statistics is derived from the French word ‘Statistik’
B
statistics is derived from the Latin word ‘Status’
C
statistics is derived from the Italian word ‘Statista’
D
none of these
Question 52Single Answer
Statistics is concerned with _____
A
qualitative information
B
quantitative information
C
either (a) or (b)
D
both (a) and (b)
Question 53Single Answer
Statistics is defined in terms of numerical data in the _____
A
singular sense
B
plural sense
C
either or (b)
D
both (a) and (b)
Question 54Single Answer
Drinking habit of a person is _____
A
an attribute
B
a discrete variable
C
a variable
D
a continuous variable
Question 55Single Answer
Marks of a student is an example of _____
A
a continuous variable
B
a discrete variable
C
an attribute
D
none of these
Question 56Single Answer
Annual income of a person is _____
A
a continuous variable
B
a discrete variable
C
an attribute
D
(b) or (c)
Question 57Single Answer
An attribute is _____
A
a qualitative characteristic
B
a measurable characteristic
C
a quantitative characteristic
D
all these
Question 58Single Answer
Nationality of a student is ____
A
an attribute
B
a discrete variable
C
a continuous variable
D
either (a) or (C)
Question 59Single Answer
The most attractive method of data presentation is ____
A
diagrammatic
B
textual
C
tabular
D
either (a) or (b)
Question 60Single Answer
In tabulation source of the data, if any, is shown in the ____
A
footnote
B
body
C
stub
D
caption
Question 61Single Answer
The mode of presentation of data are ____
A
textual, tabulation and diagrammatic
B
tabular, internal and external
C
textual, tabular and internal
D
tabular, textual and external
Question 62Single Answer
The most accurate mode of data presentation is _____
A
diagrammatic method
B
tabulation
C
textual presentation
D
none of these
Question 63Single Answer
The best method of presentation of data is ____
A
textual
B
tabular
C
diagrammatic
D
both (b) and (c)
Question 64Single Answer
Details are shown by ____
A
charts
B
tabular presentation
C
both (a) and (b)
D
none of these
Question 65Single Answer
The unit of measurement in tabulation is ____
A
box head
B
body
C
caption
D
stub
Question 66Single Answer
In general the number of types of tabulation are ____
A
two
B
three
C
one
D
four
Question 67Single Answer
For tabulation, 'caption' is ____
A
the lower part of the table
B
the main part of the table
C
the upper part of the table
D
the upper part of a table that describes the column and sub-column
Question 68Single Answer
A table has ____
A
four parts
B
two parts
C
five parts
D
none of these
Question 69Single Answer
The entire upper part of a table is known as ____
A
caption
B
stub
C
box head
D
body
Question 70Single Answer
'Stub' of a table is the ____
A
right part of the table describing the columns
B
left part of the table describing the columns
C
right part of the table describing the rows
D
left part of the table describing the rows
Question 71Single Answer
Which of the following statements is not true for tabulation?
A
complicated data can be presented
B
it facilitates comparison between rows and not columns
C
statistical analysis of data requires tabulation
D
diagrammatic representation of data requires tabulation
Question 72Single Answer
Diagrammatic representation of data is done by ____
A
pictures
B
charts
C
diagrams
D
all these
Question 73Single Answer
The relationship between two variables are shown in ____
A
histogram
B
pictogram
C
bar diagram
D
line diagram
Question 74Single Answer
The data collected on the height of a group of students after recording their heights with a measuring tape are
A
primary data
B
continuous data
C
discrete data
D
secondary data
Question 75Single Answer
The quickest method to collect primary data is ____
A
personal interview
B
by observation
C
telephone interview
D
indirect interview
Question 76Single Answer
Some important sources of secondary data are ____
A
international and Government sources
B
private and primary sources
C
international and primary sources
D
government sources
Question 77Single Answer
Data collected on religion from the census reports are ___
A
(a) sample data
B
secondary data
C
primary data
D
either (a) or (b)
Question 78Single Answer
Which method of collection of data covers the widest area?
A
direct interview method
B
mailed questionnaire method
C
telephone interview method
D
all of these
Question 79Single Answer
In case of a rail accident, the appropriate method of data collection is by ____
A
direct interview
B
personal interview
C
indirect interview
D
all of these
Question 80Single Answer
The best method to collect data, in case of a natural calamity, is __
A
personal interview
B
questionnaire method
C
indirect interview
D
direct observation method
Question 81Single Answer
The number of observations falling within a class is called ___
A
density
B
frequency
C
both (a) and (b)
D
none of these
Question 82Single Answer
Classes with zero frequencies are called ____
A
class
B
empty class
C
nill class
D
none of these
Question 83Single Answer
Frequency distribution ____
A
arranges observations in an increasing order
B
arranges observations in terms of a number of groups
C
relates to a measurable characteristic
D
all of these
Question 84Single Answer
The number of "Frequency distribution" is ___
A
two
B
one
C
five
D
four
Question 85Single Answer
The Frequency distribution of a continuous variable is known as ___
A
grouped frequency distribution
B
simple frequency distribution
C
either (a) or (b)
D
both (a) and (b)
Question 86Single Answer
(Class frequency)/(Width of the class) is defined as ____
A
frequency density
B
frequency distribution
C
both (a) and (b)
D
none of these
Question 87Single Answer
The distribution of shares is an example of the frequency distribution of ____
A
a discrete variable
B
an attribute
C
a continuous variable
D
either (a) or (c)
Question 88Single Answer
Tally marks determines ____
A
class width
B
class boundary
C
class limit
D
class frequency
Question 89Single Answer
Mutually inclusive classification is usually meant for ____
A
a discrete variable
B
an attribute
C
a continuous variable
D
none of these
Question 90Single Answer
For determining the class frequencies it is necessary that these classes are _____
A
mutually exclusive
B
not mutually exclusive
C
independent
D
none of these
Question 91Single Answer
Mutually exclusive classification ____
A
excludes the upper class limit but includes the lower class limit
B
excludes both the class limits
C
includes the upper class limit but excludes the upper class limit
D
either (b) or (c)
Question 92Single Answer
Mutually exclusive classification is usually meant for ____
A
an attribute
B
a continuous variable
C
a discrete variable
D
any of these
Question 93Single Answer
The number of types of cumulative frequency is ____
A
one
B
three
C
two
D
four
Question 94Single Answer
The lower class boundary is ____
A
an upper limit to Lower Class Limit
B
a lower limit to Lower Class Limit
C
both (a) and (b)
D
none of these
Question 95Single Answer
Cumulative Frequency Distribution is ____
A
frequency
B
graph
C
statistical table
D
distribution
Question 96Single Answer
Graph is a ____
A
line diagram
B
bar diagram
C
pie diagram
D
pictogram
Question 97Single Answer
The chart that uses logarithm of the variable is known as ___
A
multiple line chart
B
ratio chart
C
line chart
D
component line chart
Question 98Single Answer
Horizontal bar diagram is used for ____
A
data varying over space
B
data varying over time
C
qualitative data
D
either (a) or (C)
Question 99Single Answer
Multiple axis line chart is considered when ____
A
the units of the variables are different
B
there is more than one time series
C
both (a) and (b)
D
either (a) or (b)
Question 100Single Answer
Divided bar chart is considered for ____
A
the relation of different components to the table
B
comparing different components of a variable
C
either (a) or (b)
D
both (a) and (b)
Question 101Single Answer
In case of indifference curve of two goods X and Y, as consumption of X increases :
A
MRSXY increases
B
MRSXY decreases
C
MRSXY remains the same
D
MRSXY increases but later on MRSXY decreases
Question 102Single Answer
General Economic equilibrium is NOT related to which one of the following problems ?
A
Uniqueness problem
B
Existence problem
C
Stability problem
D
Moral hazard problem
Question 103Single Answer
In the shoft-run production function, which on eof the following is CORRECT ?
A
Technology is assumed to change as labour input changes
B
Technology is assumed to change as capital stock changes
C
Technology is assumed to change positively until diminishing returns set in
D
Technology is assumedto be constant for a given production function relationship
Question 104Single Answer
As output expands, LAC curve falls. This is due to :
A
Law of variable proportions
B
Law of diminishing returns
C
Economies of scale
D
Diseconomies of scale
Question 105Single Answer
In a situtation of decision under uncertainty, if a consumer faces equal expected income from two alternatives, then she will take decision on the basis of :
A
Expected utility of both the alternatives
B
Probability of risk attached with each alternatives
C
Variation of risk attached with each alternatives
D
Mean of risk of each alternatives
Question 106Single Answer
What type of relationship the Phillips curve postulates between the rae of unemployment and the rate of increase of money wages ?
A
Inverse
B
Direct
C
Direct and proportional
D
Inverse and proportional
Question 107Single Answer
The concept of 'money illusion' was first given by whom ?
A
Milton Friedman
B
Irving Fisher
C
Robertson
D
J. M. Keynes
Question 108Single Answer
Which one of the following correctly describes the concept of 'Super Multiplier' ?
A
Investment multiplier
B
Money multiplier
C
Interaction between multiplier and accelerator
D
Employment multiplier
Question 109Single Answer
Given
I = 50 + 0.2Y
S = –150 + 0.4Y
G = 50
Where, I = Investment, S = Savings
G = Government Expenditure
Y = National Income
What is the equilibrium level of national income
A
2500
B
1250
C
250
D
1500
Question 110Single Answer
The independence of real variables from changes in money supply and nominal variables is called :
A
Keynesian dichotomy
B
Classical dichotomy
C
Money illusion
D
Money multiplier
Question 111Single Answer
Assuming the probability of a male birth as 0.5, find the chances that a family of 3 children will have two boys and one girl :
A
B
C
D
Question 112Single Answer
Which one of the following measures of central tendency will be the most appropriate to use if the data relates to rates, proportions and ratios ?
A
Arithmetic mean
B
M edian
C
Harmonic Mean
D
Geometric mean
Question 113Single Answer
The sampling distribution of mean based on a sample of 13 units selected without replacement shows a variance of 5 units. If the population consists of 49 units, estimate the variance of the population
A
80.67
B
84.87
C
86.67
D
86.87
Question 114Single Answer
In the classical linear regression model, Xi and Ui are assumed to be :
A
highly correlated
B
not correlated
C
positively correlated
D
negatively correlated
Question 115Single Answer
Identify which one of the following statements is INCORRECT ?
A
Intersection of two disjoint sets is a null set
B
Complement of a Universal set is a null set
C
If X ∩ Y =ϕ, then X-Y ≠X
D
Question 116Single Answer
Given Y = X³ – 12X² + 36X + 8, identify which one of the following is CORRECT :
A
Y is maximum at X = 6, and minimum at X = 2
B
Y is minimum at X= 6, and maximum at X = 2
C
Y has two inflexion points at X = 2 and X = 6
D
Point of optimality is indeterminate
Question 117Single Answer
Identify which one of the following statements is CORRECT :
A
A–1 is equal to Adj (A) if the value of the determinant A is unity
B
If two columns of a determinant are interchanged, the sign of the determinant does not alter
C
The value of a determinant changes if the rows and columns are interchanged
D
Law of division is allowed in matrix operations
Question 118Single Answer
Identify which of the following statements with respect to Linear Programming Problem (LPP) is CORRECT ?
A
A solution is unbounded in an LPP if all the feasible solutions of the problem fall within the boundary created by its constraints
B
If A is primal problem and B its dual, then dual of B is Not A
C
The constraints of an LPP in standard form is always expressed in less than and equal to form
D
If an LPP has two optimum solutions, then it has also infinite number of optimum solutions
Question 119Single Answer
The Net Barter terms of trade refer to :
A
The excess of import expenditures over export earnings
B
Trade agreements
C
The ratio between export prices and import prices
D
The terms and conditions on which a country is offered a loan in the event of balance of payments difficulties
Question 120Single Answer
The items on the capital account of Balance of Payments are :
A
Flow variables
B
Stock variables
C
Changes in stock magnitudes
D
Both Stock and Flow variables
Question 121Single Answer
A sudden shift from import tariffs to free trade may induce short-term unemployment in :
A
Import competing industries
B
Industries that are only exporters
C
Industries that sell domestically as well as export
D
Industries that neither import or export
Question 122Single Answer
The optimum tariff means :
A
Most occur in the elastic range of the tariff imposing home country's offer curve
B
Takes account of the probability that the partner country will retaliate with protective measures of its own
C
Maximises total export sales of the imposing country
D
Must occur in the elastic range of the partner country's offer curve
Question 123Single Answer
The movement from old level of expenditure and taxation to a new and higher level is called :
A
Concentration effect
B
Inspection effect
C
Displacement effect
D
All of the above
Question 124Single Answer
Which method can help in obtaining a welfare improvement, if externalities exist ?
A
Pigovian taxes
B
Regulation
C
Assigning property righs and permitting bargaining
D
All of the above
Question 125Single Answer
The efficiency condition in the production of pure public good requires that the production be carried out up to a point when :
{where MBi, represents marginal Benefit of the 'ith' individual and MBj represents marginal Benefits that accrue to the 'jth' individual and MC is the marginal cost}
A
B
C
D
Question 126Single Answer
If x and y are related by x – y – 10 = 0 and mode of x is known to be 23, then the mode of y is :
A
20
B
13
C
3
D
23
Question 127Single Answer
A man travels at a speed of 20 km/hr and then returns at a speed of 30 km/hr. His average speed of the whole journey is
A
25 km/hr
B
24.5 km/hr
C
24 km/hr
D
None
Question 128Single Answer
A student obtained the mean and standard deviation of 100 observations as 40 and 5.1 respectively. It was later discovered that he had wrongly copied down an observation as 50 instead of 40. The correct standard deviation is
A
5
B
6
C
3
D
7
Question 129Single Answer
For a moderately skewed distribution, quartile deviation and the standard deviation are related by
A
B
C
D
Question 130Single Answer
The median of the data 13, 8, 11, 6, 4, 15, 2, 18 is
A
5
B
8
C
11
D
9.5
Question 131Single Answer
The sum of the squares of deviations of a set of observations has the smallest value; when the deviations are taken from their
A
A.M.
B
H. M.
C
G. M.
D
None
Question 132Single Answer
If two samples of sizes 30 and 20 have means as 55 and 60 and variances as 16 and 25 respectively, then what would be the S.D. of the combined sample size 50 ?
A
5.33
B
5.17
C
5.06
D
5
Question 133Single Answer
If two variables x & y are related by 2x + 3y –7 = 0 and the mean and mean deviation about mean of x are 1 and 0.3 respectively, then the coefficient of mean deviation of y about mean is
A
–5
B
4
C
12
D
50
Question 134Single Answer
Which of the following result hold for a set of distinct positive observations ?
A
A.M > G.M > H.M
B
G.M. > A.M. > H.M
C
G.M > A.M > H.M
D
A.M > G.M > H.M
Question 135Single Answer
Measures of dispersion are called averages of the ____ order .
A
1st
B
2nd
C
3rd
D
None
Question 136Single Answer
For a set of 100 observations, taking assumed mean as 4, the sum of the deviations is –11 cm and the sum of the squares of these deviations is 257 cm. The coefficient of variation is :
A
41.13%
B
42.13%
C
0.13%
D
None
Question 137Single Answer
If the AM and HM for two numbers are 5 and 3.2 respectively, then the GM will be
A
4.05
B
16
C
4
D
4.10
Question 138Single Answer
________ are used for measuring central tendency, dispersion and skewness
A
Median
B
Deciles
C
Percentiles
D
Quartiles
Question 139Single Answer
Which of the following companies A or B is more consistent so far as the payment of dividend is concerned ?
Dividend paid by A : 5 9 6 12 15 10 8 10
Dividend paid by B : 4 8 7 15 18 9 6 6
A
A
B
B
C
Both A & B
D
Neither A nor B
Question 140Single Answer
What is the coefficient of range for the following distribution ?
Class Interval : 10-19 20-29 30-39 40-49 50-59
Frequency : 11 25 16 7 3
A
22
B
50
C
75.82
D
72.46
Question 141Single Answer
An aeroplane flies from A to B at the rate of 500 km/hr and comes back from B to A at the rate of 700 km/hr. The average speed of the aeroplane is
A
600 km/hr
B
583.33 km/hr
C
D
620 km/hr
Question 142Single Answer
For a moderately skewed distribution, which of the following relationship holds ?
A
Mean – Median = 3 (Median – Mode)
B
Median – Mode = 3 (Mean – Median)
C
Mean – Mode = 3 (Mean – Median)
D
Mean – Median = 3 (Mean – Mode)
Question 143Single Answer
___ & ___ are called ratio averages :
A
HM & GM
B
HM & AM
C
AM & GM
D
None
Question 144Single Answer
A sample of 35 observations has the mean 80 and S.D. as 4. A second sample of 65 observations from the same population has mean 70 and S.D. 3. The S.D. of the combined sample is :
A
5.85
B
5.58
C
10.23
D
None of these
Question 145Single Answer
If x and y are related as 3x – 4y = 20 and the quartile deviation of x is 12, then the quartile deviation of y is
A
14
B
15
C
16
D
9
Question 146Single Answer
Extreme values have ____ effect on mode .
A
High
B
low
C
No
D
None of these
Question 147Single Answer
The mean salary for a group of 40 female workers is Rs. 5,200 per month and that for a group of 60 male workers is Rs. 6,800 per month. What is the combined salary ?
A
Rs. 6,160
B
Rs. 6,280
C
Rs. 6,890
D
Rs. 6,920
Question 148Single Answer
The best measure of dispersion is
A
Q.D.
B
M.D.
C
Range
D
S.D.
Question 149Single Answer
If the mean and S.D. of x are a and b respectively, then the S.D. of is :
A
a/b
B
–1
C
1
D
ab
Question 150Single Answer
Suppose a population A has 100 observations 101, 102, 103, ...., 200 and another population B has 100 observations 151, 152, 153, ....., 250. If VA and VB represents the variance of the two populations respectively, then VA/ VB =
is :