Question

The mean deviation of 2, 4, 6, 8, 10 about its mean is

• A. 4.2
• B. 2.4
• C. 3.4
• D. 4.3

Answer 1

The correct option is B 2.4

$Mean\left(\overline{x}\right)=\frac{\sum x_i}{n}=\frac{2+4+6+8+10}{5}=6\therefore M.D=\frac{\sum |x_i-\overline{x}|}{n}=\frac{|2-6|+|4-6|+|6-6|+|8-6|+|10-6|}{5}=\frac{4+2+0+2+4}{5}=\frac{12}{5}=2.4$