Question

$x$	$6$	$8$	$10$	$12$	$14$
$f$	$9$	$7$	$15$	$13$	$6$

Find the arithmetic mean of the following data:

• A. $13$
• B. $12$
• C. $11$
• D. $10$

Answer 1

The correct option is D $10$

$x$	$6$	$8$	$10$	$12$	$14$
$f$	$9$	$7$	$15$	$13$	$6$
$fx$	$54$	$56$	$150$	$156$	$84$

Then, Mean $=\frac{\sum fx}{\sum f}=\frac{54+56+150+156+84}{9+7+15+13+6}=\frac{500}{50}=10$.

Hence, option $D$ is correct.