Mathematics
Calculate the mean of the following distribution:
| Class interval | Frequency |
|---|---|
| 5 - 15 | 2 |
| 15 - 25 | 6 |
| 25 - 35 | 4 |
| 35 - 45 | 8 |
| 45 - 55 | 4 |
Related Questions
The mean of the following data is 16. Calculate the value of f.
Marks No. of students 5 3 10 7 15 f 20 9 25 6 Marks obtained by 40 students in a short assessment is given below, where a and b are two missing data :
Marks No. of students 5 6 6 a 7 16 8 13 9 b If the mean of the distribution is 7.2, find a and b.
Calculate the mean of the following distribution :
Class interval Frequency 0 - 10 8 10 - 20 5 20 - 30 12 30 - 40 35 40 - 50 24 50 - 60 16 Calculate the mean of the following distribution using step deviation method :
Marks Number of students 0 - 10 10 10 - 20 9 20 - 30 25 30 - 40 30 40 - 50 16 50 - 60 10