Question # 1

Sum of deviation of observation from their mean cannot be

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Zero

Less than zero

Other than zero

Greater than zero

Variance of b,b,b,b is:

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b

4b

Zero

None of these

When the values are not of equal importance then we compute

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Simple mean

Weighted

Combined mean

None of these

The properties of hypergeometric experiment are:

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Three

Four

Five

One

The total angle of pie chart is:

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90^o

1800^o

360^o

270^o

The probability of an impossible event is equal to:

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Zero

One

0.5

None of these

A numerical value computed from sample is called:

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Parameter

Sampling unit

Sampling design

Statistic

By decreasing ×̅ the length of confidence interval for m

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Increases

Decreases

No effect

None of these

The types of dispersion are:

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2

3

4

5

The regression coefficient of x on y is:

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Cov (x,y) / Var (x)

Cov (x,y) / Var (y)

Cov (x,y) / S.D (x)

Cov (x,y) / S.D (y)

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NAT I General Science Statistics MCQs With Answers

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