Answered: A 23-year-old male university student…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A 23-year-old male university student is given the task in their exercise physiology class to record their heart rate (in beats per minute) while completing three different activities (resting, walking and running) each day for a month. He uses excel to create box and whisker plots (Figure 4) to compare central tendency and the spread of the data collected. In 200 - 400 words (written in complete sentences but can be presented as a paragraph or separate dot points); • Explain and compare the information in Figure 4 by determining and discussing relevant values including median, maximum, minimum and interquartile range for the three activity types. • What percentage of recordings at rest (Figure 4) were between 80 – 95 beats per minute? • Does the student have a healthy resting heart rate (see Figure 5)? • Has the data been presented effectively in Figure 4? Please explain your answer.

11:31 pm Sun 19 Feb
E15
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UNIP1003 ST 2023 Assessmen...
Figure 4
Heart rate (beats per minute)
Heart rate results of student engaged in different activity types
160
150
140
130
120
110
100
90
80
70
60
50
Figure 5
Male
-100
-80
Rest
AGE
20-39 47-54
40-59 46-54
60-79
Open in PDF Expert
95
91
86
Healthy resting heart rates by age and gender
-110
-84
59-63
59-63
Walking
Activity type
RESTING HEART RATE
BY AGE AND GENDER
VERY ABOVE
BELOW
ATHLETE GOOD AVERAGE AVERAGE AVERAGE
55-60
61-68
69-75
55-60
61-67
45-53 54-59
60-66
100
96
88
68-76
67-74
Female
VERY
ABOVE
AGE
ATHLETE GOOD AVERAGE AVERAGE
20-39
52-59
60-65
66-73
74-81
40-59 51-58
64-70
71-78
60-79 52-58
64-69
70-77
Q
POOR
76-83 84-94
77-84
85-94
75-83
84-97
[.../
BELOW
AVERAGE POOR
82-88 89-98
79-85
86-96
78-85
86-95
-150
Running
-88
a
125
103
95
45%
Done

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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