Question

3 7 The ages of 40 students are given in the following table :
12
13
14
15
16
17
18
Age (in years)
Frequency
2
4.
6
9
8
7
4
Find the arithmetic mean.​

Answer 1

Answer:

15

Explanation:

1 . To find arthmetic mean by using the the mean

formula:

sum of all quantities/ number of

quantities

2 . 12+13+14+15+16+17+18/7

3 . 105/7

4 . 15

The arithmetic mean of the numbers are 12, 13 , 14, 15, 17 ,16 ,18 is.... 15.......