If the value of - f i x i -199 and mean -60- find the value of - f i -A- 3-31B- 331C- 32D- 31

The correct option is A 3.31 Mean = ∑ f_ix_i/∑ f_i 60 = 199/f_i f_i =199/60 f_i = 3.31 ...

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Finding Mean for Grouped Data When Class Intervals Are Not Given

If the value ...

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If the value of $\sum f_{i} x_{i}$ = 199 and mean = 60, find the value of $\sum f_{i}$ ?

3.31

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331

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