Question

Find out the value of mean deviation form the data given below: 50, 70, 45, 20, 80, 90, 25, 30, 40, 10​

Answer 1

190 is the answer if that Is wrong

Answer 2

Answer:

21.2

Explanation:

step I:

find mean of the following data

50+70+45+20+80+90+25+30+40+10

_____________________________

                     10

= 460/10

= 46

step II:

subtract each value from mean to get their absolute values ignoring their signs

|50-46| = 4

|70-46| = 24

|45-46| = 1

|20-46| =26

|80-46| = 34

|90-46| = 44

|25-46| = 21

|30-46| = 16

|40-46| = 6

|10-46| = 36

step III:

add them

4+24+1+26+34+44+21+16+6+36 = 212

step IV:

divide this sum by the total number of values of data

212/10 = 21.2

Therefore the answer is 21.2