Sum is from measures of dispersion solve it now - Economics - Measures of Dispersion

Question

Sum is from measures of dispersion solve it now

Rachna Puneet Mehta · Accepted Answer

Dear student
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5fd2060acd994%20jpg"
style="width: 1023px; height: 650px;">note: answer may not tally
with the book answer due to use of different method for calculating
mean
Regards