Question # 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

The variance of 5,5,5,5,5 is.

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0

25

5

125

The mean deviation is least if deviations are taken from

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A.M

Mode

G.M

Median

In the grouped data , the range is the difference between.

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Two extreme class frequency

Two extreme class limits

Tow extreme class boundaries

None of these

test2

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3

4

2

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

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

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4

6

8

zero

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

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

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

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Negative

zero

1

-1

Why is it necessary to square the difference from the mean when computing the standard deviation.

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So that the extreme values will not affect the calculation

Some of the differnece will be positive and some will e negative

It can change drastically from one data set to the next

It is determined by only two points in the data set

For Laptokurtic distribution.

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b2 > 3

b2 < 3

b2 = 3

b1 > 3

The difference between largest and smallest observation is called

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Interval

Class interval

Range

Difference

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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers

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