Question

Mid-value 15 25 35 45 55 Frequency 8 12 15 11 4
Convert it first into a continuous series, then into a less than cumulative frequency series.
CLASS 11 CBSE
Help guys please

Answer 1

Explanation:

class interval f

10-20 8

20-30 12

30-40 15

40-50 11

50-60 4

class interval f

less than 10 0

less than 20 8

less than 30 20

less than 40 35

less than 50 46

less than 60 50