write 3 difference between inclusive and exclusive series.

What are the objectives of measures of dispersion?

Mathmatical Questions

Q.1. Calculate quartile deviation and its cofficient of rajesh 's income .

markas : 12 34 5 6 7 8 9 19 1112

income(Rs) : 239 250 251 251 257 258 260 261262 262273 275

Q.2. Calculate meandeviation from (1) arithmeticmean (2) median :

marks: 7 4 10 9 15 12 7 9 7

Q.3. Calculate (a) median cofficient of dispersion , and (b) mean cofficient of dispersion from the following data :

size of item : 4 6 8 10 12 14 16

frequency : 2 4 5 3 2 1 4

I want full solutions of economics -TR JAIN and VK OHRI

Discuss the importance of measures of Dispersion?

answers of NM SHAH statistics class 11 chapter 10

Measurement of Range in Continuous Series

Range= Upper Limit of the Highest Class Interval - Lower Limit of the Lowest Class Interval

Method 2: Range is the difference of the mid value of the highest class and that of the lowest class.

Range= Mid-Value of the Highest Class Interval - Mid-Value of the Lowest Class Interval

Example: For the following data calculate the range.

X

f

0-10

10

10-20

15

20-30

11

30-40

17

40-50

13

Solution:

Method 2: Range = Mid-Value of the Highest Class Interval - Mid-Value of the Lowest Class Interval

Range = 45 5= 40

Q) In finding the mid value we should use ' + ' sign or ' - ' sign ?

The solution you have presented is wrong as (50-40)/2 = 45 as it should be (50+40)/2 = 45.

it is for both the cases

case 1 :- MID VALUE OF HIGHEST CLASS INTERVAL

case 2 :- MID VALUE OF LOWEST CLASS INTERVAL

What are the properties of a good measure of dispersion?

solutions for n m shah

A batsman is to be selected for a cricket team. The choice is between X and Y on the basis of their scores in five previous tests which are:

25

85

40

80

120

Y

50

70

65

45

Which batsman should be selected if we want,

(i) a higher run getter, or

(ii) a more reliable batsman in the team?

Q. Calculate Standard Deviation by Assumed mean method in individual series ?

5

6

9

4

12

lorenz curve how to find cumulative percentage?

Calculate mean deviation from the following data, using mean and median respectively.

SIZE 4, 6, 8, 10, 12, 14, 16

FREQUENCY 2, 4, 5, 3, 2, 1, 4

what are open ended series?

Q.1. Calculate mean , standard deviation and variance :

Variable : 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40

frequency : 2 5 7 13 21 16 8 3

Q.2. The number examined , the meanweight and standard deviation in each group of examination by two medical examiners are given below . calculate mean and standard deviation of both the group taken together .

Medical examiner number examined mean weight (lbs) standard deviation (lbs)

A 50 113 6.5

B 60 120 8.2

Q.3. You are given the following data about height of boys and girls :

Boys Girls

Number 72 38

Average height (in inches) 68 61

Variance of distribution (in inches) 9 4

(a) calculate cofficient of variation

(b) decide whose height is more variable .

write 3 difference between inclusive and exclusive series.

What are the objectives of measures of dispersion?

Mathmatical Questions

Q.1. Calculate quartile deviation and its cofficient of rajesh 's income .

markas : 12 34 5 6 7 8 9 19 1112

income(Rs) : 239 250 251 251 257 258 260 261262 262273 275

Q.2. Calculate meandeviation from (1) arithmeticmean (2) median :

marks: 7 4 10 9 15 12 7 9 7

Q.3. Calculate (a) median cofficient of dispersion , and (b) mean cofficient of dispersion from the following data :

size of item : 4 6 8 10 12 14 16

frequency : 2 4 5 3 2 1 4

I want full solutions of economics -TR JAIN and VK OHRI

Discuss the importance of measures of Dispersion?

(a) 8 %

(b) 7.5 %

(c) 4 %

(d) None of these

answers of NM SHAH statistics class 11 chapter 10

Measurement of Range in Continuous SeriesRange= Upper Limit of the Highest Class Interval - Lower Limit of the Lowest Class Interval

: Range is the difference of the mid value of the highest class and that of the lowest class.Method 2Range= Mid-Value of the Highest Class Interval - Mid-Value of the Lowest Class Interval

: For the following data calculate the range.ExampleXf0-10

10

10-20

15

20-30

11

30-40

17

40-50

13

:SolutionMethod 2: Range = Mid-Value of the Highest Class Interval - Mid-Value of the Lowest Class IntervalRange = 45 5= 40

Q) In finding the mid value we should use ' + ' sign or ' - ' sign ?

The solution you have presented is wrong as (50-40)/2 = 45 as it should be (50+40)/2 = 45.

it is for both the cases

case 1 :- MID VALUE OF HIGHEST CLASS INTERVAL

case 2 :- MID VALUE OF LOWEST CLASS INTERVAL

What are the properties of a good measure of dispersion?

solutions for n m shah

A batsman is to be selected for a cricket team. The choice is between X and Y on the basis of their scores in five previous tests which are:

X

25

85

40

80

120

Y

50

70

65

45

80

Which batsman should be selected if we want,

(i) a higher run getter, or

(ii) a more reliable batsman in the team?

Q. Calculate Standard Deviation by Assumed mean method in individual series ?

X

5

6

9

4

12

11

lorenz curve how to find cumulative percentage?

Calculate mean deviation from the following data, using mean and median respectively.4, 6, 8, 10, 12, 14, 16SIZE2, 4, 5, 3, 2, 1, 4FREQUENCYa)mean b)mean deviation c)standard deviation d)lorez curve

what are open ended series?

Q.1. Calculate mean , standard deviation and variance :

Variable : 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40

frequency : 2 5 7 13 21 16 8 3

Q.2. The number examined , the meanweight and standard deviation in each group of examination by two medical examiners are given below . calculate mean and standard deviation of both the group taken together .

Medical examiner number examined mean weight (lbs) standard deviation (lbs)

A 50 113 6.5

B 60 120 8.2

Q.3. You are given the following data about height of boys and girls :

Boys Girls

Number 72 38

Average height (in inches) 68 61

Variance of distribution (in inches) 9 4

(a) calculate cofficient of variation

(b) decide whose height is more variable .

answers of NM SHAH statistics class 11 chapter 10