Answer:
B. 45
Step-by-step explanation:
We have been given a stem and leaf plot and we are asked to find the median age for our given plot.
We can represent the data provided by stem and box plot as:
22, 23, 29, 31, 34, 36, 38, 40, 43, 45, 47, 48, 49, 53, 57, 58, 62, 63, 65.
[tex]\text{Median}=\frac{n+1}{2}[/tex]
We can see that our data set has 19 data points, so median age will be:
[tex]\text{Median}=\frac{19+1}{2}[/tex]
[tex]\text{Median}=10[/tex]
We can see that 10th data point of our data set is 45, therefore, median age is 45 and option B is the correct choice.
