Question

a. If the mean of the following frequency distribution is 7.5, find the missing frequency 'f'.
3
6
8
9
11
12
Variable
Frequency
5
20
7
f
10
6.
17
10
8
7
6​

Answer 1

Answer:

3+6+8+9+11+12+5+20+7+f+10+6+17+10+8+7+6÷17=7.5

=139+f/17=7.5

by taking lcm u can sove it

this come as means us some of total terms duvide by no. of terms