defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Statistics Measures of Central Tendency
Use the following table to find the mean.
|
Age (in years) |
Number of students |
|
0 – 5 |
80 |
|
5 – 10 |
120 |
|
10 – 15 |
160 |
|
15 – 20 |
40 |
|
Total |
400 |
1
8.5
2
7.5
3
9.5
4
10.5