Question

write the formula of mean for grouped data​

Answer 1

Formula for the mean in grouped data.

Mean = $\sfΣ f \times \frac{ xi.} {n }$

Answer 2

Answer:

There are two formulas:-

1. Direct method:-

Mean = sum of fixi/ sum of fi

2. Assumed mean method :-

Mean = a+ sum of fidi/sum of fi

Note:- Here fixi, fi and fidi are column. we have to find values of these column then add them.

Step-by-step explanation:

Hope IT helps✌