Question

From the following data, prepare an exclusive continuous series on the basis of equal class- interval : Income (*) No. of Persons Less than 50 Less than 100 20 50-150 2 38 150 and above 55 200-250 20 250 and above 5 300 and above 1.​

Answer 1

Given :  

                         No. of Persons

Less than 50            2

Less than 100         20

Less than 150       38

150 and above      55

200-250               20

250 and above     5

300 and above      1

To Find :  prepare an exclusive continuous series

Solution:

                         No. of Persons       CI                 f

Less than 50           2                       0  - 50          2

Less than 100        20                       50 - 100      18    ( 20 - 2)

Less than 150       38                        100 - 150      18    (38 - 20)

150 and above      55                       150 - 200      30   (55 - 20 - 5)

200-250               20                       200 - 250     20

250 and above     5                        250 - 300      4   ( 5 - 1)

300 and above      1                        300 - 350       1

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