EASY

Earn 100

Calculate coefficient of mean deviation about mean for the following data:

$7, 4, 10, 9, 15, 12, 7, 9, 9, 18$

50% studentsanswered this correctly

Important Questions on Measures of Dispersion

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

For a given distribution the arithmetic mean is

15

and the standard deviation is

9

then the coefficient of variation is equal to

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

What will be the probable value of mean deviation when

Q_{3} = 40

and

Q_{1} = 15

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The mean of a distribution is

14

and the standard deviation is

5

. What is the value of the coefficient of variation?

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The average runs scored by a batsman in

15

cricket matches is

60

and standard deviation of the runs is

15

. Find the coefficient of variation of the runs scored by him.

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The marks obtained by students $A$ and $B$ in $3$ examinations are given below

Marks of $A$	$30$	$20$	$40$
Marks of $B$	$70$	$0$	$5$

The ratio of the coefficient of variation of marks of $A$ and the coefficient of variation of marks of $B$ is

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Coefficient of variation of two distributions are

50

and

60

and their arithmetic means are

30

and

25

, respectively. Difference of their standard deviation is

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

If the numbers are

5, 1, 8, 7, 2

, then the coefficient of variation is

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Coefficient of variation of two distributions are

60

and

70

, and their standard deviation are

21

and

16

, respectively. What are their arithmetic means?

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Coefficient of variation of two distributions are

60

and

70

and their standard deviations are

21

and

16

respectively. Then their AM's are

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The means of two groups of observations

A

and

B

are

\vec{x}, \vec{y}

respectively and their standard deviations are respectively

2

and

3 .

In order that the group

A

is to be more consistent than the group

B,

\frac{\vec{y}}{\vec{x}} <

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of

10

to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The mean of two sample sizes

50

and

100

respectively are

54.1

and

50.3

. Find the mean of the sample size of

150

obtained by combining the two samples(up to one decimal).

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

The coefficient of variation is independent of units.

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Calculate coefficient of mean deviation about mean for the following data:

$7, 9, 12, 15, 5, 4, 11$

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

A good measure of dispersion should be based on all the observations of the series.

MEDIUM

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

What are the requisites of a good measure of variation?

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Find the Coefficient of mean deviation from median of observations $40, 62, 54, 90, 68, 76$ .

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

A good measure of dispersion should be capable of further mathematical treatment and statistical analysis.

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

A good measure of dispersion should not be unduly affected by sampling fluctuations.

EASY

Mathematics>Statistics>Measures of Dispersion>Absolute Measures

Cotyledons are also called-

Calculate coefficient of mean deviation about mean for the following data: 7,4,10,9,15,12,7,9,9,18

Important Questions on Measures of Dispersion

Learn and Prepare for any exam you want !

Calculate coefficient of mean deviation about mean for the following data:

$7, 4, 10, 9, 15, 12, 7, 9, 9, 18$