Mathematics
The mean of the following distribution is 62.8 and the sum of all the frequencies is 50. Find the missing frequencies f1 and f2.
| Class | Frequency |
|---|---|
| 0 - 20 | 5 |
| 20 - 40 | f1 |
| 40 - 60 | 10 |
| 60 - 80 | f2 |
| 80 - 100 | 7 |
| 100 - 120 | 8 |
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Using the information given in the adjoining histogram; calculate the mean.
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