Question

The heights of a sample of 15 students are recorded in the stemplot below.

A stemplot titled heights of students has values 59, 61, 62, 63, 63, 64, 65, 65, 66, 67, 67, 67, 67, 69, 73.

What is the mean height, in inches, of this sample?

65
65.2
66
67

Answer 1

To find the mean height of the sample, we need to sum up all the values and divide them by the total number of values.

Sum of values = 59+61+62+63+63+64+65+65+66+67+67+67+67+69+73 = 964

Total number of values = 15

Mean height = sum of values / total number of values = 964/15 = 64.2666... ≈ 65.2

Therefore, the mean height, in inches, of this sample is approximately 65.2.

The answer is B.