Question # 1

The mean deviation of dispersion can be negative.

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Often

Sometimes

Always

Never

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

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Negatively skewed

Positively skewed

Symmetrical

Leptokurtic

The mean deviation is least if deviations are taken from

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A.M

Mode

G.M

Median

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

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-4

(4)²

8

0

The sum of absolute deviation form median is.

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zero

negative

least

maximum

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 is a poor measure of dispersion in open-end distribution.

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Range

Standard deviation

Variance

A.M

In measure of relative dispersion unit of measurement is.

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Changed

Vanishes

Does not vanishes

None of these

The variance of constant is always

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Constant

One

Positive

Zero

Moment ratios b1 and are.

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Expressed in original unit of the data

Dimensionless quantities

Independent of origin and scale of messurement

Both b and c

Relative depression is of types.

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1

4

3

2

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

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None of these

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

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Range (X)

Range (X) + A

Zero

A

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

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Range

Quartile deviation

Mean deviation

Standard deviation

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.

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

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4

6

8

zero

β is a letter

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German

Greek

Latin

Dutch

The lack of symmetry is called________.

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consistent

skewness

Equidistant

Kurtosis

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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