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NAT I General Science Statistics MCQs With Answers

Question # 1

The variance of binomial distribution is:

Choose an answer

npq

None of these

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Question # 2

An after Eid sale in store is an example of

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Secular trend

Attributes

Constants

None of those

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Question # 3

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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Question # 4

The difference of the true value of parameter and corresponding value of sample is called

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Non-sampling error

Sampling error

Random error

None of these

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Question # 5

If 1- a = 0.90, then value of Z_a/2 is

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1.645

1.96

2.33

2.575

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Question # 6

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

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Question # 7

A disadvantage of range is that it is based on

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Absolute deviation

Squared deviations

Two extreme observation

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Question # 8

A fair coin is tossed four times the prob.of getting four heads is:

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1/4

1/2

1/16

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Question # 9

If for a contingency table d.f = 12 and the no of rows = 4 then the no of columns will be

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Question # 10

The geometric mean of the values 2,4,-3,8 is:

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-3

Zero

None of these

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Question # 11

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

Choose an answer

1/25

4/13

15/20

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