# CBSE Class 11 Economics Organisation of Data

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ORGANISATION OF DATA

1. What is meant by classification of data?

2. What is raw data?

3. Name the different types of data classifications.

4. What are attributes and variables?

5. What do you mean by qualitative classification?

6. Name the series, which have Class Intervals.

7. What type of error is fatal to statistical results?

8. For what does l1 and l2in a continuous series mean stand for?

9. How is mid value calculated?

10. What is range?

11. Explain briefly the Exclusive and Inclusive method of continuous series.

12. How does loss of information take place in a frequency distribution?

13. What is a ‘Bivariate frequency distribution’?

1. What are the advantages of classification of data?

2. What are the different ways of classification of data?

3. What are ‘discrete’ and ‘continuous’ variables? Differentiate the two variables.

1. What are the steps involved in the preparation of a frequency distribution? Explain.

NCERT text book questions

1. Which of the following alternatives is correct? (i) The class midpoint is equal to:

a) The average of the upper class limit and the lower class limit.

b) The product of upper class limit and the lower class limit.

c) The ratio of the upper class limit and the lower class limit.

d) None of the above.

(ii) The frequency distribution of two variables is known as

a) Univariate Distribution

b) Bivariate Distribution

c) Multivariate Distribution

d) None of the above

2. Use the data of Q.8 that relate to test marks by 20 students in an English test. Answer the following:

a) Obtain the range of marks.

b) Divide the range into appropriate number of class intervals and obtainthe frequency distribution of marks

c) Find the number of students whose marks in the test are:

(i) Less than 20

(ii) More than 25

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