Question

the accompanying data set lists diastolic blood pressure measurements (mm hg) of females. all of the values are even numbers. construct a stemplot. identify the two values that are closest to the middle when the data are sorted in order from lowest to highest (these values are often used to find the median.) 70 70 78 80 74 60 70 74 94 68 90 76 70 88 76 66 84 88 80 76 80 88 82 82 construct the stemplot. the two values that are closest to the middle when the data are sorted in order from lowest to highest are and (type integers or decimals. do not round. use ascending order.)

Explanation:

Step1: Organize data for stemplot

First, consider the tens - digit as the stem and the units - digit as the leaf.

Step2: Construct stemplot

6 | 0 6 8
7 | 0 0 0 0 4 4 6 6 6 8
8 | 0 0 0 2 2 4 8 8 8
9 | 0 4

Step3: Sort data for median

Sort the data: 60, 66, 68, 70, 70, 70, 70, 74, 74, 76, 76, 76, 78, 80, 80, 80, 82, 82, 84, 88, 88, 88, 90, 94. There are 24 data points.

Step4: Find middle - values

For 24 data points, the middle is between the 12th and 13th ordered values. The 12th value is 76 and the 13th value is 78.

Answer:

Stemplot:
6 | 0 6 8
7 | 0 0 0 0 4 4 6 6 6 8
8 | 0 0 0 2 2 4 8 8 8
9 | 0 4
Middle - values: 76, 78