Class {10 - 20, 20 - 30, 30 - 40 , 40 - 50}, f {5, 7, 8, 9}- Calculate the cumulative frequency.

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Solution

5
5+7 = 12
12+8 = 20
20 + 9 = 29

We add successive frequencies of all the x values.

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Similar questions

Prepare a frequency distribution table for the scores given:

42, 22, 55, 18, 50, 10, 33, 29, 17, 29, 29, 27, 34, 15, 40, 42, 40, 41, 35, 27,

44, 31, 38, 19, 54, 55, 38, 19, 20, 30, 42, 59, 15, 19, 27, 23, 40, 32, 28, 51.

Take the class intervals as 10-20, 20-30, 30-40, 40-50, 50-60.

From the frequency distribution table answer the following questions:

(i) What does the frequency corresponding to the class interval 20-30 indicate?

(ii) In which class intervals are the scores 10, 20 and 30 included?

(iii) Find the range of the scores.

40 - 50 =

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