Question # 1

The probability of type-1 error is denoted by

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a

1- a

b

1- b

Statistics must be:

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Comparable

Not comparable

Discrete in nature

Qualitative in nature

If constants are added to or subtracted from the values of the variable the value of r is

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Negative

Positive

Zero

Remain unchanged

Second moment about mean is

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Zero

One

Standard Deviation

Variance

A perfect positive correlation is signified by

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0

-1

+1

-1 to +1

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

If any value is negative in the data then it is impossible to calculate:

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A.M

H.M

G.M

Mode

When the values are not of equal importance then we compute

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Simple mean

Weighted

Combined mean

None of these

Most frequent value of the data is called:

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Mean

G.M

Mode

None of these

How many purpose are served by index numbers?

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2

3

4

5

If any ultimate class frequency is negative the data will be

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Inconsistent

Consistent

Correlated

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NAT I General Science Statistics MCQs With Answers

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