Question # 1

When the two variables are uncorrelated the value of r is

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-1

0

+1

None of these

Accepting H_o /H_o is true

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No error

type I error

Type II error

A

In normal distribution in the parameter which controls the relative flatness of the curve is:

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m

S

√2p

e

In Mesokurtic distribustion

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m₄ < 3s⁴

m₄ = 3s⁴

m₄ ¹ 3s⁴

m₄ > 3s⁴

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 var (x) =5, var(y) =10, then var (2x + y) is:

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10

15

30

25

First moment about mean is always:

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Zero

1

Negative

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

How many basic types of index numbers are?

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2

3

5

4

if m = 130, X̂ = 150,s = 5,n =10, what test statistic is appropriate?

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Z

t

X²

F

The correlation coefficient would be

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1.95

-1.95

0.95

None of these

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NAT I General Science Statistics MCQs With Answers

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