A random sample of 24 people is classified in the following table according to their ages:
|
Age |
Frequency |
|
10 – 20 |
4 |
|
20 – 30 |
6 |
|
30 – 40 |
8 |
|
40 – 50 |
2 |
|
50 - 60 |
4 |
What is the mean age of this group of people?
1
25
2
33.3
3
16.67
4
54.54