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Measures Of Dispersion

Question

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Range is the:

Ratio of the largest to the smallest observations

Average of the largest to smallest observations

Difference between the smallest and the largest observations

Difference between the largest and the smallest observations

Solution

D.

Difference between the largest and the smallest observations

Some More Questions From Measures of Dispersion Chapter

Calculate the mean deviation about mean and standard deviation for the following distribution:

Classes

Frequencies

20–40

3

40–80

6

80–100

20

100–120

12

120–140

9

50

A measure of dispersion is a good .supplement to the central value in understanding a frequency distribution. Comment

Define dispersion.

How many methods are there to calculate dipersion?

Define range.

Define quartile deviation.

How is coefficient of quartile deviation calculated?

Define mean deviation.

Define standard deviation.

Give formula to calculate standard deviation of a frequency destribution series by direct method.

Mock Test Series

Mock Test Series

NCERT Sample Papers

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