Civil Services MPPSC State Service Prelims Mock Tests 2025 Quantitative Aptitude Elementary Statistics
The absentee record of students in a given term is as follows. If the mean absentee for the term is 15.5, find the frequencies 'x' and 'y'.
| Number of Days | 0-5 | 5-10 | 10-15 | 15-20 | 20-25 |
| Total Number of Students | 15 | 16 | x | 8 | y |
|
Number of Days |
25-30 |
30-35 |
35-40 |
Total |
|
Total Number of Students |
8 |
6 |
4 |
70 |
1
x = 4, y = 3
2
x = 7, y = 7
3
x = 3, y = 4
4
x = 7, y = 6