find the sum of lower limit of modal class and median of the following data: 30-40......25, 40-50......30, 50-60...16, 60-70...19, 70-80....17, 80-90.....18 ?
Putting the given data in the form of a table:
Class Interval | Frequency(f) | Cumulative frequency (c.f) |
30-40 | 25 | 25 |
40-50 | 30 | 55 |
50-60 | 16 | 71 |
60-70 | 19 | 90 |
70-80 | 17 | 107 |
80-90 | 18 | 125 |
Total | N=125 |