railway RRB Technician Grade 1 Mock Test 2024 Mathematics Statistics Variance and Standard Deviation
Find the mean deviation about the mean of the following data?
|
Size(x): |
1 |
2 |
4 |
8 |
6 |
10 |
10 |
12 |
|
Freq(f): |
2 |
1 |
3 |
3 |
9 |
7 |
5 |
2 |
1
2.597
2
2.87
3
2.57
4
2.60