The ages of students in a class have been put into the frequency distribution below:

What is the average age of these students?
A)19.50
B)19.83
C)20.00
D)22.00
E)23.00

Question

The ages of students in a class have been put into the frequency distribution below:

What is the average age of these students?
A)19.50 
B)19.83 
C)20.00 
D)22.00 
E)23.00

Quizplus · Accepted Answer

To find the average age of the students, we need to calculate the mean. We can do this by multiplying each age by its corresponding frequency, adding these products together, and then dividing by the total number of students.

Using the frequency distribution, we can see that there are a total of 12 students (sum of frequencies), and their ages range from 18 to 25.

To calculate the mean:

(18*1 + 19*2 + 20*4 + 21*2 + 22*1 + 23*1 + 25*1) / 12 = 19.83

Therefore, the best choice is B, with an average age of 19.83.

The Ages of Students in a Class Have Been Put