Question # 1

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

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4

6

8

zero

First moment about mean is always equal to

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One

Negative

Zero

Positive

If b₂ = 3, then the distribution is:

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leptokurtic

Platykurtic

Normal

None of these

Mean deviationis always.

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More than S.D.

Equal to S.D.

Less than S.D.

None of these

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

Lack of symmetry is called

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Kurtosis

Skewness

Normality

All of them

Which of the following measures of dispersion is independent of the units employed.

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Standard deviation

Quartile deviation

_{Coefficient of variation}

Variance

A data having least C.V is considered more__________.

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Consistent

Skewness

Equidistant

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 measures of disperesin are chaged by the change of.

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Origin

Scale

Both a and b

None of these

Fist moment about origin in is always equal

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Mean

Variance

Zero

1(One)

Co-efficent of quartile deviation can be calculated by the following formula

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The sum of the squares of deviations is the least when measured from.

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A.M

Median

Mode

Both A and B

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.

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

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Range (X)

Range (X) + A

Zero

A

The main advantages of using the range as a measure of dispersion is that.

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It is easy to calculate

It is heavily influenced by extreme values.

It can change drastically from one data set to the next

It is determined by only two points in the data set

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

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Mean

Mode

Median

All of these

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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