Question # 1

The probability of an impossible event is equal to:

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Zero

One

0.5

None of these

E |X- M| =

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Zero

Mean deviation

S.D

Variance

The lowest value of variance is:

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1

0

-2

None of them

How many basic types of index numbers:

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2

3

4

5

The probability of an always lies between:

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-1 and 1

1 and 0

0 and 1

0 and ∞

In symmetrical distribution the values of mean median and mode

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Zero

Coincide

Do not coincide

None of these

In which distribution the successive trials are with replacement:

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Hypergeometric distribution

Binomial distribution

Continuous distribution

None of these

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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5

4

3

2

The value of the data lying between Q₁ and Q₃ are

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50%

25%

75%

None of these

How many purpose are served by index numbers?

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2

3

4

5

An estimator is a

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Parameter

Constant

Random variable

Statistic

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NAT I General Science Statistics MCQs With Answers

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