Question

Why is it better calculate of M.D. from median than that from mean?

Solution

It is better to calculate M.D. from median than that from mean because the sum of the deviations taken from median ignoring ± signs is less than the sum of deviations taken from mean.

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.

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Measures Of Dispersion

Why is it better calculate of M.D. from median than that from mean?

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

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Location

Classes	Frequencies
20–40	3
40–80	6
80–100	20
100–120	12
120–140	9
	50

For Daily Free Study Material Join wiredfaculty

Measures Of Dispersion

Why is it better calculate of M.D. from median than that from mean?

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

NCERT Sample Papers

Entrance Exams Preparation

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