Question

Find the missing frequency ’x’ if mode = 74 C.I 20-30 30-40 40-50 50-60 60-70 70-80 frequency 2 3 1 4 x 8

Answer 1

Answer: x= 8

Step-by-step explanation:

C.I                        f

40-50                 5

50-60                 x

60-70                 15

70-80                  12

80-90                   7

As form given the mode is 67 which lies in 60-70

therefore L= 60

Now as we know

Hence, the missing frequency is 8.