Question

please give all answers (correct). Yhe one who will give correct answer will be mark as brainliest and i will thank all his/her answer and also follow his/her.​

Answer 1

Answer:

There are many questions here, so I will just tell you the procedure to be followed.

Step-by-step explanation:

In case the data is not tabulated, calculate the average by adding the observation (referred to as $x_{i\\}$) and then divide it by the total frequency.

Suppose the data is 12, 11, 8, 15, 12 then the average will be $\frac{12+12+11+15+8}{5}$ which is equal to 58/5 which is 111.6.

For mean of tabulated data, make a table in array (in ascending or descending order), find $f_{i} x_{i} and x_{i}$ and divide the total sum of fixi by total sum of xi