Question # 1

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

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Range

Quartile deviation

Mean deviation

Standard deviation

The mean deviation can never be

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Positive

Negative

Zero

None of these

M.D. of the values 4,4,4,4 is

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0

4

8

12

The measures of disperesin are chaged by the change of.

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Origin

Scale

Both a and b

None of these

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

Range can be calculated in open-end classes.

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Never

Always

Often

Seldom

Standard deviation is always calculate form:

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Mean

Median

Mode

All of the above

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

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Negative

zero

1

-1

The compare the variation of two or more than two sereies, we use.

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Mean absolute deviation

Variance

Coefficient of viariation

Corrected atandard deviation

For symmetrical distributions the values of co-efficent of skewness is

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Negative Number

Positive Number

Imaginary Number

Pure Number

Teh range of the value -2, -4, -6 and -8 is.

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-6

6

-10

-4

First moment about mean is always equal to.

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Standard deviation

Zero

1

Variance

The distribution is symmetrical if the moment coefficient of skewense b1 is.

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Negative

Postive

3

0

Relative depression is of types.

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1

4

3

2

β is a letter

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German

Greek

Latin

Dutch

Mean deviationis always.

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More than S.D.

Equal to S.D.

Less than S.D.

None of these

For a moderately skewed dsitribution, whihc of the following emprical formula holds.

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M.D. = 4/5(S.D)

Q.D. = 2/3 (S.D)

Q.D . = 5/6 (M.D.)

All of these

Which measure of disperesion is considered as the best genereal purpose measure of dispersion.

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Range

Semi interquartile range

Standard deviation

Mean deviation

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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