Question

Use the table and the data provided to analyze the following data. During gym class, the pulse rate was recorded for 19 students before and after an exercise warm-up. The pulse rates are listed below. Pulse before Exercise Pulse after Exercise 67 87 67 88 67 89 68 89 71 91 72 93 72 93 75 95 77 96 77 97 79 98 81 98 85 101 87 105 87 105 91 119 97 125 103 125 121 147 Part A: Create a stemplot for each set of data. Justify your reasoning for split or nonsplit stems. (10 points) Part B: Compare and contrast the two data sets. Justify your answer using key features of the data (shape, outliers, center, and spread). (10 points) just a little confused on how to set it up

Answer 1

Answer:

Part A

Please see attached the required stem and leaf plot

For the stem and leaf plot, the nonsplit system is used because of clarity for analysis

Part B:

From the shape of the stem and leaf plot we have that there is an average increase of pulse rate of 20 pulses in all the 19 students after the exercise

The shape of the plot is relatively the same for the before and after exercise save for the decrease in the third to the last row by one and the increase in the second to the last roe by one student

The spread remained relatively constant in both cases with the most being in the 60s range having 7 students in the before exercise and the 80s range having 8 students in the after exercise leaf plot.

Step-by-step explanation:

The given data are;

67${}$                                    87

67${}$                                    88

67 ${}$                                   89

68 ${}$                                   89

71 ${}$                                    91

72                                   93

72                                   93

75                                   95

77                                   96

77                                   97

79                                   98

81                                    98

85                                   101

87                                   105

87                                   105

91                                    119

97                                   125

103                                  125

121                                  147