Question

The mean of the following distribution is 78. Find the missing frequencies x and y.
C.I.
50 - 60
60 - 70
70 - 80
80 - 90
90 – 100
frequency
8
6
12
x
y
total
50​

Answer 1

Answer:

the missing frequencies x and y.

C.I.

50 - 60

60 - 70

70 - 80

80 - 90

90 – 100

frequency

8

6

12