Question # 1

When the base year values are used as weights, the weighted average of relatives price index is the same as.

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the paache's index

The laspeyres index

The unweighted average of relatives price index

None of these

An experiment which produced different outcomes even if it is repeated a large number of times, under similar conditions is called

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Event

Compound event

Random experiment

None of these

Probability of an impossible event is

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Zero

Negative

Positive

One

When two dice are rolled, the maximum totla on the two faces of dice will be.

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2

6

12

36

The numebr of trial in bionomial distribution is.

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Not fixed

Fixed

Large

Small

The probability of getting one red ball from a bag constaining 4 red, 3 white and 3 black balls is.

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3/10

1/5

2/5

1/2

If x and y are independent random variables, E(xy)

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E(XY)

xE(y)

E(XY)

E(X) . E(Y)

Random numbers can be generated mechanically by

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By use of digital computers

Probgrammable calculators

Ordinary calculators

Both a and b

P (A/B) can be evaluated by formula

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P(A∩B)/P(B)

P(A∪B). P(B)

(A∪B)/P(B)

P(A∩B)/P(A)

If data is arranged in increasing order of magnitude that data is scald to be arranged in:

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Descending order

Ascending order

Statistic order

Both A and B

In chain base method the base period is.

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Fixed

Changed

Constant

None of these

The suitable average for shoe or collar size is.

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Geometric mean

Arithmetic mean

Mode

Median

A quantitative variable whose value are countable is called.

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Categorical variable

Continuous variable

Discrete variable

None of these

The purpose of the sample is to draw inference about:

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statistic

Population

Parameter

Primary

In a hypergeometric distribution N = 6, n = 2, K = 3 Then mean.

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1

2

3

4

Price of commodity in current year can be represented as

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P_oi

P_on

P_n

P_i

Subset of sample space is called

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Event

Simple event

Compound event

Experiment

The range of the scores 19,3,140,25,95,is

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140

137

143

3

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