railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Elementary Statistics
Find the missing frequency(p) for the following distribution whose mean is 8 :
|
x : |
3 |
5 |
7 |
9 |
11 |
13 |
|
f : |
6 |
8 |
15 |
p |
8 |
4 |
1
18
2
25
3
12
4
10