Question # 1

Relative depression is of types.

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1

4

3

2

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

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Negative

zero

1

-1

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

In measure of relative dispersion unit of measurement is.

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Changed

Vanishes

Does not vanishes

None of these

The types of dispersion are.

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2

3

4

5

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

A disadvantage of range is that it is based on.

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Absolute deviation

Square deviation

Two extreme observation

Upper and quartile

Second moment about mean is called

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Standard deviation

Mean deviation

Variance

Coefficient of variation

The distribution is positively skewed if.

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Mean < Mode

Mean > Mode

Mean > Median

Both b and c

The sum of absolute deviation form median is.

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zero

negative

least

maximum

If Q3 = 20 and Q1 = 10 the coefficient of quartile deviation is.

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3

1/3

2/3

1

Mean deviation = S.D

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2/3

4/5

5/6

6/5

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.

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