Determine the median age of a student in a technical mathematics class whose ages are: 42, 18, 19, 20, 23, 36, 18, 25, 20, 20, 24, 22, 26, 29, 37, 20, 20, 27, 42, 51, 24, 45, 24, 18, 31.
A)27.2
B)24
C)51
D)20

Question

Quizplus · Accepted Answer

To find the median age, we need to arrange the ages in ascending order: 
18, 18, 18, 19, 20, 20, 20, 22, 23, 24, 24, 25, 26, 27, 29, 31, 36, 37, 42, 42, 45, 51

There are 22 students, an even number, so we take the average of the two middle values: (22+1)/2 = 11.5 
The two middle values are the 11th and 12th values: 24 and 24. 
So, the median age is (24+24)/2 = 24.

Determine the Median Age of a Student in a Technical