# NCERT Class 11 Statistics Measures of Dispersion

Read and download NCERT Class 11 Statistics Measures of Dispersion chapter in NCERT book for Class 11 Economics. You can download latest NCERT eBooks for 2022 chapter wise in PDF format free from Studiestoday.com. This Economics textbook for Class 11 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 11 Economics to understand the answers of the exercise questions given at the end of this chapter

## Measures Of Dispersion Class 11 Economics NCERT

Class 11 Economics students should refer to the following NCERT Book chapter Measures Of Dispersion in standard 11. This NCERT Book for Grade 11 Economics will be very useful for exams and help you to score good marks

### Measures Of Dispersion NCERT Class 11

EXERCISES

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

2. Which measure of dispersion is the best and how?

3. Some measures of dispersion depend upon the spread of values whereas some calculate the variation of values from a central value. Do you agree?

4. In a town, 25% of the persons earned more than Rs 45,000 whereas 75% earned more than 18,000. Calculate the absolute and relative values of dispersion.

5. The yield of wheat and rice per acre for 10 districts of a state is as under:

District 1 2 3 4 5 6 7 8 9 10

Wheat 12 10 15 19 21 16 18 9 25 10

Rice 22 29 12 23 18 15 12 34 18 12

Calculate for each crop,

(i) Range

(ii) Q.D.

(v) Standard Deviation

(vi) Which crop has greater variation?

(vii)Compare the values of different measures for each crop.

6. In the previous question, calculate the relative measures of variation and indicate the value which, in your opinion, is more reliable.

7. A batsman is to be selected for a cricket team. The choice is between X and Y on the basis of their five previous scores 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?

8. Averge daily wage of 50 workers of a factory was Rs 200 with a Standard Deviation of Rs 40. Each worker is given a raise of Rs 20. What is the new average daily wage and standard deviation? Have the wages become more or less uniform?

9. If in the previous question, each worker is given a hike of 10 % in wages, how are the Mean and Standard Deviation values affected?

Please refer to attached file for NCERT Class 11 Statistics Measures of Dispersion

 NCERT Class 11 Statistics Glossary Of Statistical Terms
 NCERT Class 11 Statistics Table Of Two Digit Random Numbers
 NCERT Class 11 Economics Indian Economy On The Eve Of Independence
 NCERT Class 11 Economics Comparative Development Experiences Of India And Its Neighbours
 NCERT Class 11 Economics Indian Economy
 NCERT Class 11 Economics LPG An Appraisal
 NCERT Class 11 Economics Poverty
 NCERT Class 11 Economics Human Capital Formation In India
 NCERT Class 11 Economics Rural Development
 NCERT Class 11 Economics Employment Growth And Other Issues
 NCERT Class 11 Economics Infrastructure
 NCERT Class 11 Economics Environment And Sustainable Development
 NCERT Class 11 Statistics Introduction
 NCERT Class 11 Statistics Collection of Data
 NCERT Class 11 Statistics Organisation of Data
 NCERT Class 11 Statistics Presentation of Data
 NCERT Class 11 Statistics Measures of Central Tendency
 NCERT Class 11 Statistics Measures of Dispersion
 NCERT Class 11 Statistics Correlation
 NCERT Class 11 Statistics Index Numbers
 NCERT Class 11 Statistics Use of Statistical Tools