Question

The mean deviation of the data $3,10,10,4,7,10,5$ from the mean is

• A. $2$
• B. $2.57$
• C. $3$
• D. $3.75$

Answer 1

The correct option is B $2.57$

Given data is, 3,10,10,4,7,10,5
Here, $n=7,\overline{x}=\frac{3+10+10+4+7+10+5}{7}=7$
$\therefore$ Mean deviation from mean is $=\frac{1}{n}(\sum |x-\overline{x}|)=\frac{4+3+3+3+0+3+2}{7}=\frac{18}{7}=2.57$