Measures of Dispersion Test

Result

Measures of Dispersion Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

What would happen to the variance of a data set if we multiplied every observation by 5?

A
Variance increased by 25

B
Variance increased by 55

C
Variance decreased by 25

D
Variance decreased by 35

Solution

Change in variance is the square of change in scale.
Question 2
1 / -0

Following are the Relative measures of dispersion except

A
Co-efficient of Range

B
Co-efficient of Quartile deviation

C
Co-efficient of Mean deviation

D
Standard deviation

Solution

It is a absolute measure of dispersion
Question 3
1 / -0

The degree of variation among the values is evaluated by various measures of ---------------

A
Central tendency

B
Dispersion

C
Both

D
None

Solution

Measures of dispersion attempt to describe the spread of the data values in a data set. Dispersion (also called variability, scatter, or spread) is the extent to which a distribution is stretched or squeezed. Common examples of measures of statistical dispersion are the variance, standard deviation, and interquartile range.
Question 4
1 / -0

Lorenz Curve was devised by

A
Dr. Max A’Lorenz

B
Dr. Max B’Lorenz

C
Dr. Max O’Lorenz

D
Dr. Max D’Lorenz

Solution

It was developed by Max O. Lorenz in 1905 for representing inequality of the wealth distribution.
Question 5
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A measure of relative dispersion is given by the:

A
Co-efficient of variance

B
Quartile deviation

C
Variance

D
Standard deviation

Solution

Relative measures of dispersion, are also known as coefficients of dispersion, are obtained as ratios or percentages. The coefficient of variation (CV) is the ratio of the standard deviation to the mean (average).
Question 6
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An ideal measure of dispersion is

A
The standard deviation

B
The mean deviation

C
Quartile deviation

D
Range

Solution

It posseses most of the features laid down for an ideal measure of dispersion.

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Re-Attempt Weekly Quiz Competition

Measures of Dispersion Test - 2

Result

Measures of Dispersion Test - 2

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Question 1

Variance increased by 25

Variance increased by 55

Variance decreased by 25

Variance decreased by 35

Solution

Question 2

Co-efficient of Range

Co-efficient of Quartile deviation

Co-efficient of Mean deviation

Standard deviation

Solution

Question 3

Central tendency

Dispersion

Both

None

Solution

Question 4

Dr. Max A’Lorenz

Dr. Max B’Lorenz

Dr. Max O’Lorenz

Dr. Max D’Lorenz

Solution

Question 5

Co-efficient of variance

Quartile deviation

Variance

Standard deviation

Solution

Question 6

The standard deviation

The mean deviation

Quartile deviation

Range

Solution

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