Question

A batsman scores runs in 10 innings as $38,70,48,34,42,55,63,46,54,44$. The mean deviation about mean is :

• A. $8.6$
• B. $6.4$
• C. $10.6$
• D. $7.6$

Answer 1

Answer: (A)

$8.6$

Mean of the given distribution is $\overline{x}=\frac{38+70+48+34+42+55+63+46+54+44}{10}=49.4$
$\therefore$ Mean deviation $=\frac{\sum |x-\overline{x}|}{n}=8.6$