Question

The mean height of a group of students is 65.4 inches. A student joins the group who is 73 inches tall. How does this student’s height affect the mean?

A. The new mean height will still be 64.5 inches.
B. The new mean height will be greater than 65.4 inches.
C. The new mean height will be less than 65.4 inches.
D. The new mean height will be 73 inches.

Answer 1

The new mean height will definitely be greater than before:  greater than 64.5 inches.

Answer 2

The new mean height will be greater than 65.4 inches.

Explanation:

The mean height of a group of students is 65.4 inches. A student joins the group who is 73 inches tall.

Mean is 65.4 inches

A student joins the group who is 73 inches tall.

73 is greater than the means 64.4 inches

So mean will increase definitely

Mean will vary depends on the total number of students

The new mean height will be greater than 65.4 inches.