Question # 1

In a family with two children how many are girls

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0,1

2

0,1,2,3

0,1,2s

Variance of the values 8,8,8,8,8,is:

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8

0

64

None of these

If E(q̂) = q then q̂ is called

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Biased estimator

Unbiased estimator

Positively biased

Negatively biased

The types of dispersion are:

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2

3

4

5

The probability of drawing one green ball from a bag containing 6 red,8 black 10 yellow and one green ball is

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1/25

0

4/13

15/20

A disadvantage of range is that it is based on

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Absolute deviation

Squared deviations

Two extreme observation

The properties of hypergeometric experiment are:

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Three

Four

Five

One

P_n/ P_n-1 100 is equal to:

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Price relative

Chain indices

Link relative

None of these

The graph of time series is called:

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Histogram

Ogive

Straight line

Historigram

If any value is negative in the data then it is impossible to calculate:

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A.M

H.M

G.M

Mode

The most commonly used mathematical method for measuring trend is

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Moving average method

Semi-average method

Method of least squares

Free- hand curve method

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NAT I General Science Statistics MCQs With Answers

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