Mathematics
Consider the table given below :
| Marks | Number of students |
|---|---|
| 0 – 10 | 12 |
| 10 – 20 | 18 |
| 20 – 30 | 27 |
| 30 – 40 | 20 |
| 40 – 50 | 17 |
| 50 – 60 | 6 |
The mean of the marks given above is :
6
18
27
28
Related Questions
The mean of 100 observations is 50. If one of the observations was misread as 50 instead of 40, the correct mean is :
40
49.9
50
50.1
If the mean of the following data is 25, the value of p is equal to :
x f 5 3 15 p 25 3 35 6 45 2 2
3
4
5
If the mean of the following distribution is 27, then the value of p is :
Class Frequency 0 – 10 8 10 – 20 p 20 – 30 12 30 – 40 13 40 – 50 10 6
7
9
11
The mean of 5 numbers is 27. If one of the numbers be excluded, their mean is 25. The excluded number is :
25
26
28
35