Assignment
Required Resources
Read/review the following resources for this activity:
OpenStax Textbook: Chapters 2, 6, and 7
Week 5 Lesson
Week 3 Excel Spreadsheet
Week 5 Excel Spreadsheet
Week 5 Lab Assignment Template
Instructions
This week’s lab highlights using graphics, distributions, and tables to summarize and interpret data. Review the video below to gain an overview of this week’s lab assignment.
Prepare
Download the following documents from the Required Resources.
Week 3 Excel spreadsheet
Week 5 Excel spreadsheet
Week 5 Lab Assignment Template
Step 1: Gather Data
Begin with 10 heights provided to you by your instructor. (Please reach out to your instructor by Monday in Week 5 if you have not received the 10 heights.)
To add 10 more values to your lab data, survey or measure 10 people to find their heights. Add these heights to the Week 5 Lab Template along with the 10 provided by your instructor.
Determine the mean and standard deviation for the 20 values (your instructor’s 10 from Step 1A above plus your 10) by using the Week 3 Excel Spreadsheet.
Post a screenshot of the portion of the spreadsheet that helped you determine these values.
How does your height compare to the mean (average) height of the 20 values? Is your height taller, shorter, or the same as the mean of the sample?
Note: The values in the picture above are NOT the values that you are to use in your lab.
Step 2: Provide Background Information
Give some background information on the group of people you used in your study. Use the following questions to guide your answers.
How did you choose the participants for your study? What was the sampling method: systematic, convenience, cluster, stratified, simple random?
What part of the country did your study take place in?
What are the age ranges of your participants?
How many of each gender did you have in your study?
What are other interesting factors about your group?
Step 3: Use the Week 5 Excel Spreadsheet
Use the Week 5 Excel Spreadsheet for the following:
Use the Empirical Rule tab from the spreadsheet. Then, determine the 68%, 95%, and 99.7% values of the Empirical Rule in terms of the 20 heights in your height study.
Post a screenshot of your work from the Week 5 Excel spreadsheet.
What do these values tell you?
Post another screenshot of your work from the Normal Probability tab from the Week 5 Excel spreadsheet.
Based on your study results, what percent of the study participants are shorter than you? What percent are taller than you? (Example: If my height is 73 inches, then 20.86% of the relevant population is shorter. The other 79.14%, of course, is taller).
Step 4: Submit Your Assignment
Be sure your name is on the Week 5 Lab Assignment Template (Word document), save it, and then submit it in the assignment dropbox on this page.
Grading
This activity will be graded based on the Week 5 Lab Assignment Rubric.
Outcomes
CO 6: Interpret the principles of normally distributed data sets.
CO 7: Evaluate the probability using the Normal Distribution.
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