Question

Using an appropriate method, find the mean of the following frequency
distribution:
Class
interval
84-90
90-96
96-102 102-108 108-114 114-120
Frequency
8
10
16
23
12
11
Which method did you use, and why?​

Answer 1

Answer:

Here the simplest method if you dont wanna calculate big numbers.You can use Step-deviation method i.e

Mean ( x ) = a+ (ΣFiUi/ΣFI)h

where a=assumed mean , h=class size,ui=Xi-a/h

where a is the assumed mean, h is the class size.

Hope you find this easy

Answer 2

mean=8244/80

=103.05

Step-by-step explanation:

Hope it helps