Question # 1

A hypothesis in which all parameters are specified is called

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Composite hypothesis

Null hypothesis

Simple hypothesis

All

If E(q̂) = q then q̂ is called

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Biased estimator

Unbiased estimator

Positively biased

Negatively biased

A graph of time series is called

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Histogram

Polygon

Straight line

Historigram

Var (2x + 3) is:

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5 var (x)

4 Var (x)

4 Var (x) +3

4 Var (x) +9

If the two variables are uncorrelated then the value of "r" is

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-1

0

F1

Fractional

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

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1.96

2.575

1.645

2.326

When the two variables are uncorrelated the value of r is

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-1

0

+1

None of these

The probability of rejecting H_o when it is true is called

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Confidence co-efficient

Level of confidence

Size of test

power of the test

E |X- M| =

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Zero

Mean deviation

S.D

Variance

Which is correct for the binomial distribution:

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Mean > Variance

Mean < Variance

Mean = Variance

Mean = standard Deviation

Current year quantities are used as weight in

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Laspeyr's index number

Paasche's index number

Fisher's index number

None of these

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NAT I General Science Statistics MCQs With Answers

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