A researcher is comparing two multiple-choice tests with different conditions. In the first test, a typical multiple-choice test is administered. In the second test, alternative choices (i.e. incorrect answers) are randomly assigned to test takers. The results from the two tests are given below.

	Regular test	Randomized answers
Mean	59.9	44.8
S.D.	10.2	12.7

Question 1 : Can the scatterness of the two distributions be compared, just by looking at the given figures?

Select one:

a.Yes, as the S.D. is given

b.No, as the mean is not same

c.May be

d.Can't say

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Question 2

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What relative measure of dispersion can be used in order to compare these two distributions?

Select one:

a.Range

b.Coefficient of quartile deviation

c.Coefficient of variation

d.variance

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Question 3

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Value of coefficient of variation for first type "Regular test" will be ______.

Select one:

a.10.4

b.12.3

c.17.3

d.15

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Question 4

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Value of coefficient of variation for first type "Randomized answers" will be ______.

Select one:

a.23

b.28.3

c.10

d.16.3

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Question 5

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Coefficient of variation is measured in terms of ____.

Select one:

a.units

b.ratios

c.percentages

d.none of these

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