Question

the heights of a sample of 15 students are recorded in the stemplot below. what is the mean height, in inches, of this sample? heights of students 5|9 6|1 2 3 3 4 6|5 5 6 7 7 7 7 9 7|3 key: 6|5 = 65 inches

Explanation:

Step1: List out all data values

The data values from the stemplot are 59, 61, 62, 63, 63, 64, 65, 65, 66, 67, 67, 67, 67, 69, 73.

Step2: Calculate the sum of data values

$59 + 61+62 + 63+63+64+65+65+66+67+67+67+67+69+73=990$.

Step3: Calculate the mean

The mean $\bar{x}=\frac{\text{Sum of data values}}{\text{Number of data values}}=\frac{990}{15}=66$.

Answer:

66