Question

Please give step of solving step deviation method of mean

Answer 1

Mean= sum of all observation/Total number of observation...

Answer 2

1st step: make colum

1) class

2)class mark

3)di =xi -A

4) ui= di/g

5) Frequency

6) fi ui

step 2: fill the information

step 3: formula

u- = fixi/fi

step 4: X-= A +u-g