Question # 1

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

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Z

t

X²

F

A graph of a cumulative frequency distribution is called:

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Frequency curve

Frequency polygon

Ogive

Histogram

Variance remains unchanged by change of:

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Origin

Scale

Both

None of them

The correlation coefficient would be

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1.95

-1.95

0.95

None of these

For the standardized normal variate P(0Σ z Σ1) =...............

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0.34135

0.47725

0.49867

0.33725

Is a normal distribution μ = 10 and σ² = 25 the mode is

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5

10

25

100

If R_xy = - 0.84 then r_xy is

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-0.84

0.84

0.42

None of these

Total angle of a pie chart is

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100^o

180^o

300^o

360^o

Sum of dots when two dice are rolled is:

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Discrete variable

continuous variable

Constant

Qualitative variable

The variance of 5,5,5,5,5,is

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0

25

5

125

The variance of binomial distribution is:

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np

nq

npq

None of these

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NAT I General Science Statistics MCQs With Answers

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