# NCERT Class 11 Statistics Correlation

Read and download NCERT Class 11 Statistics Correlation 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

## Correlation Class 11 Economics NCERT

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

### Correlation NCERT Class 11

EXERCISES

1. The unit of correlation coefficient between height in feet and weight in kgs is

(i) kg/feet

(ii) percentage

(iii) non-existent

2. The range of simple correlation coefficient is

(i) 0 to infinity

(ii) minus one to plus one

(iii) minus infinity to infinity

3. If rxy is positive the relation between X and Y is of the type

(i) When Y increases X increases

(ii) When Y decreases X increases

(iii) When Y increases X does not change

4. If rxy = 0 the variable X and Y are

(i) linearly related

(ii) not linearly related

(iii) independent

5. Of the following three measures which can measure any type of relationship

(i) Karl Pearson’s coefficient of correlation

(ii) Spearman’s rank correlation

(iii) Scatter diagram

6. If precisely measured data are available the simple correlation coefficient is

(i) more accurate than rank correlation coefficient

(ii) less accurate than rank correlation coefficient

(iii) as accurate as the rank correlation coefficient

7. Why is r preferred to covariance as a measure of association?

8. Can r lie outside the –1 and 1 range depending on the type of data?

9. Does correlation imply causation?

10. When is rank correlation more precise than simple correlation coefficient?

11. Does zero correlation mean independence?

12. Can simple correlation coefficient measure any type of relationship?

13. Collect the price of five vegetables from your local market every day for a week. Calculate their correlation coefficients. Interpret the result.

14. Measure the height of your classmates. Ask them the height of their benchmate. Calculate the correlation coefficient of these two variables. Interpret the result.

15. List some variables where accurate measurement is difficult.

16. Interpret the values of r as 1, –1 and 0.

17. Why does rank correlation coefficient differ from Pearsonian correlation coefficient?

Please refer to attached file for NCERT Class 11 Statistics Correlation

 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