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The mean of the following frequency dist...

The mean of the following frequency distribution is 62.8 and the sum of all the frequencies is 50. Compute the missing frequency `f_1` and `f_2` . Class: 0-20 20-40 40-60 60-80 80-100 100-120 Frequency: 5 `f_1` 10 `f_2` 7 8

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