Question # 1

If Y=X + A , trhe range of Y =

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Range (X)

Range (X) + A

Zero

A

The sum of absolute deviations is a minimum if these deviations are taken from the

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Mean

Mode

Median

All of these

The variance expresses the variability of data in ................ as unit of data.

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Square of unit

Squaare root of unit

Same unit

All of these

Second moment abut mean is.

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0

1

variance

Standard deviation

The most popular measure of dispersion in industry and meteorology is.

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Range

Quartile deviation

Mean deviation

Standard deviation

In a symmetrical distribution, the coefficient of skewness will always be.

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Negative

zero

1

-1

For symmetrical distribution mega 3 is.

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zero

1

2

3

Mean deviation is always.

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Less then S.D

Equal to S.D

More than S.D

Negative

Which of the following statements is correct.

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Every symmetrical curve is measokurtic

Standard deviation is the mean squared deviations from the mean

The standard deviation of a constant is constant

Teh second moment about zero equals variance.

The positive square root of the mean of the squares of deviations of values from their mean is

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Variance

Covariance

Standard deviation

Standard error

First moment about mean is always equal to

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One

Negative

Zero

Positive

the standard deviation is independent of.

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Change of origin

Change of scale of measurement

Change origin and scale of meaturement

None of these

If b₂ = 3, then the distribution is:

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leptokurtic

Platykurtic

Normal

None of these

The difference between largest and smallest observation is called

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Interval

Class interval

Range

Difference

Which of the following measures of dispersion is independent of the units employed.

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Standard deviation

Quartile deviation

_{Coefficient of variation}

Variance

The distribution is measokurtic if the moment coefficient of of kurtosis b2 is.

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Equal to 0

Equal to 3

Less than 3

Greater than zero

A disadvantage of range is that it is based on.

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Absolute deviation

Square deviation

Two extreme observation

Upper and quartile

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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