Question

The following relates to the age group of students in a class
Number of student
15 - 19
20-24
25 – 29
30 - 34
35 - 39
40 - 44
30
42
61
15
8
4
160
Required to Calculate
(i)
The mean
Hence or otherwise, the standard deviation​

Answer 1

Answer:

ssssssssssssssssssss

Answer 2

30 - 34

42 - 48

61 - 65

15 - 19

8 - 12

4 - 8

160 - 164

Step-by-step explanation:

Add every number 4 and then you get the answet