Question # 1

An estimator is a

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Parameter

Constant

Random variable

Statistic

The lowest value of variance is:

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1

0

-2

None of them

Movement in secular trend

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Smooth

Steady

Regular

All

Which is correct regarding the normal distribution

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b₁ = 3

b₂ = 0

Q.D = 0.7979 S

Q1 = m 0.6745S

In Mesokurtic distribustion

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m₄ < 3s⁴

m₄ = 3s⁴

m₄ ¹ 3s⁴

m₄ > 3s⁴

If P(A) = 0.7,P(B) = 0.5,A and B are independent then P(A C B) =

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0.35

1.2

0.85

None of these

How many basic types of index numbers are?

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2

3

5

4

In which distribution the successive trials are with replacement:

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Hypergeometric distribution

Binomial distribution

Continuous distribution

None of these

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

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-1

0

F1

Fractional

The normal distribution is ..........distribution

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Positively skewed

Negatively skewed

Symmetrical

Meso kurtic

For a given set of bivariate data if B_yx = 0.52 and b_xy = -1.02 then r is

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0.73

-0.73

0.00

1.00

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NAT I General Science Statistics MCQs With Answers

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