Question # 1

Pearson's co-efficient of skewness is positive when distribution is

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Negatively skewed

Positively skewed

Symmetrical

Leptokurtic

In symmetrical distribution if Q1 = 4, Q3 = 12 then median is.

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4

6

8

zero

The variance of constant is always

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Constant

One

Positive

Zero

In measure of relative dispersion unit of measurement is.

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Changed

Vanishes

Does not vanishes

None of these

The mean deviation is least if deviations are taken from

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A.M

Mode

G.M

Median

First central moment is always.

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0

1

-1

2

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

If the third moment about mean is zero ( m3 = 0) , then the distribution is.

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Mesokurtic

Positively skewed

Symmetrical

Negatively skewed

If the value of a variable are -2, -3, -5, -10 then range is.

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-12

8

-8

0

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

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

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0

4

8

12

Mean deviation is always.

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Less then S.D

Equal to S.D

More than S.D

Negative

Standard deviation is always calculate form:

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Mean

Median

Mode

All of the above

Karl Pearson's 1^st co-efficient of skewness is given by formula

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None of these

The value of standard deviation changes by change of.

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Origin

Algebraic sign

Scale

None

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

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-6

6

-10

-4

The mean of the absolute deviations of observations from mean, median or mode is called

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Quartile deviation

Absolute deviation

Mean

Mean deviation

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

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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