Question # 1

The variance of binomial distribution is:

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np

nq

npq

None of these

An estimator is........ if its expected value is equal to the population parameter to be estmated

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Bad

Based

Unbiased

None of these

If two regression coefficients are 0.8 and 0.2 then correlation coefficient is

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0.16

-0.16

0.40

-0.40

If critical region is located on both sides it is called

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One tailed test

One sided test

Two tailed test

Not exists

If b_yx < 0 and b_xy < 0 then "r"

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=0

<0

>0

¹ 0

The formula used to estimate a parameter is called:

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Estimate

Estimation

Bais

Estimator

P_n/ P_n-1 100 is equal to:

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Price relative

Chain indices

Link relative

None of these

The lowest value of variance is:

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1

0

-2

None of them

In hypergeometric distribution trials are:

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Independent

Dependent

Constant

None of these

The value of correlation co-efficient lies between

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0 to +1

-1 to 0

-0.5 to +0.5

-1 to +1

In a 2 x 2 contingency table degrees of freedom is:

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4

2

1

8

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NAT I General Science Statistics MCQs With Answers

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