Question

Find the mean deviation about mean of the data : 6, 7 , 10 , 12 , 13 , 4 , 8 , 12 ​

Answer 1

Answer:

mean is 12.5

hopes it helps you

Answer 2

SOLUTION -:

Given -;

6, 7 , 10 , 12 , 13 , 4 , 8 , 12 

$Mean = \frac{6 + 7 + 10 + 12 + 13 + 4 + 8 + 12}{8} \\ \\ = \frac{72}{8} = 9$

$now \: mean \: deviation \: = \frac{ \sum \: x \: - \: m \: }{n}$

$6 - 9 \: + \: 7 - 9 + 10 - 9 + 12 - 9 \: \frac{ + 13 - 9 + 4 - 9 + 8 - 9 + 12 - 9}{8}$

$\frac{3 + 2 + 1 + 3 + 4 + 5 + 1 + 3}{8} \\ = \frac{22}{8}$

= 2.75

mean deviation about the mean data for 6 , 7 10 , 12 , 13 , 4 , 8 , 12 is 2.75