Question

the mean of the grouped data can be found by direct as method​

Answer 1

Answer:

To find the mean using direct method, for grouped data, multiply the mid – point of intervals (Xi) with the frequency (fi) of that interval and take their sum denoted by ∑Xifi. Now, divide this expression with the sum of frequencies, denoted by ∑fi. Complete step by step answer: ... This is an example of grouped data.

Explanation:

Answer 2

Explanation:

this is multiple choice questions