Question # 1

Mean deviation = S.D

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2/3

4/5

5/6

6/5

For Laptokurtic distribution.

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b2 > 3

b2 < 3

b2 = 3

b1 > 3

Co-efficent of standard deviation can be measured by the following formula

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

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3

1/3

2/3

1

A data having least C.V is considered more__________.

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Consistent

Skewness

Equidistant

None of these

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

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Range

Quartile deviation

Mean deviation

Standard deviation

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

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Negatively skewed

Positively skewed

Symmetrical

Leptokurtic

In measure of relative dispersion unit of measurement is.

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Changed

Vanishes

Does not vanishes

None of these

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

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Negative

zero

1

-1

In a symmetrical distribution the coefficient of skewness is equal to.

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-1

+1

0

None of these

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

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Mean

Mode

Median

All of these

The variance of 4,4,4,4,4 is.

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-4

(4)²

8

0

The distribution is positively skewed if.

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Mean < Mode

Mean > Mode

Mean > Median

Both b and c

Which of the following is a relatie measure of dispersion.

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Standard deviation

Variance

Coefficient of variation

All of these

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

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Negative

Postive

3

0

The range of the scores 19,3,140,25,95,is

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140

137

143

3

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

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-6

6

-10

-4

test2

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3

4

2

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