Instructions
1. Watch Mode, Median, Mean, Range, and Standard Deviation (Links to an external site.) (7:09) to help you calculate mode, median, mean, range, and standard deviation.
2. Complete the following problems:
Problem 1: You are given pulse rates for two sample distributions. Describe the data in terms of central tendency and variability.
Sample A Pulse rates (beats per minute) 66 75 72 69 78 73 82 79 84 72
Sample B Pulse rates (beats per minute) 65 68 66 72 88 81 94 71 88 91
Problem 2: Calculate the mean, median, and mode for each data set.
Problem 3: Calculate the sample standard deviation and range of each data set.
Discussion Prompts
Respond to the following prompts in your initial post:
- What is the mean, median, and mode for Sample A and Sample B?
- Which might be the better measure for central tendency and why? When answering this question, think about which measure will give you the best representative score of the data.
- What is the standard deviation of Sample A and Sample B?
- How variable are the data? When answering this question, compare the range of Sample A and Sample B.
- Suppose you know your pulse-rate is 74 beats per minute. Would this seem to be slower or faster than the two samples? Explain your reasoning.
After you complete your initial post, respond to your classmates in a respectful way. When replying to classmates, discuss:
- How are you in agreement or opposition with your colleague’s choice of measure for central tendency?
- How is the data dispersed? For instance, are the pulse-rates spread out evenly between the minimum and maximum pulse-rates?
- In your opinion, is range or standard deviation more useful to describe variability? Why?
- What insights did you acquire from this post?
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