Question

(n) Following is the frequency distribution with unknown frequencies:
Class 20 - 30 30 – 40 40 - 50 50 - 60 Total
Frequency a 2a 3a a 70
Find the value of a and prepare a frequency distribution table for drawing a
frequency polygon. Draw a frequency polygon.

give me answer fast​

Answer 1

a = 10 , Frequency polygon constructed

Step-by-step explanation:

20 - 30      a

30- 40       2a

40-50        3a

50 - 60      a

Total        7a

7a = 70

a = 10

20 - 30      10

30- 40       20

40-50        30

50 - 60      10

Total        70

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