Question

What is the mean of the given stem-and-leaf plot?

Stem	Leaf
$1$	$236$
$2$	$178$
$3$	$328$
$4$	$559$
$5$	$367$

Key $1|2=12$

• A. $35.66$
• B. $53$
• C. $3333.6$
• D. $35$

Answer 1

The correct option is D $35$

From the stem-and-leaf plot, the values are: $12,13,16,21,27,28,33,32,38,45,45,49,53,56,57$
$\text{Mean}=\frac{\text{sum of all the values}}{\text{number of values}}$
Sum $=12+13+16+21+27+28+32+33+38+45+45+49+53+56+57$
Sum $=525$
Number of values $=15$
Mean $=\frac{525}{15}=35$
So, option A is the correct answer.