Week 3 Discussion: Measures Of Central Tendency And Variation

Greetings Class Members !!

For grading purposes, this particular discussion posting area runs from Sunday Jan 17 through Sunday Jan 24, inclusively.

We explore the so-called Normal Distributions this Week. This includes normal probability distributions, the standard normal distribution, the standard normal distribution Table, the concept of continuous distributions, sampling distributions, and the Central Limit Theorem.

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Please don’t forget to use an “outside” resource as part of the content and documentation for your first Post – the Post which is due on or before Wednesday of the Week – the Post where you make the most major contribution to the Weekly discussion posting area and attempt to address the discussion prompts / cues for the Week. It could possibly include a web site that you discovered on the internet at large, so long as the web site is relevant and substantial and does not violate the Chamberlain University policy for prohibited web sites, and so forth. It could possibly include references / resources that you discover through making use of the online Chamberlain University Library ( please click Resources along the left and then click Library to discover the link to the Chamberlain University online Library ) . 🙂

Check out the link below for some information about the so-called Standard Normal Distribution.  After that page comes up also click on the normal distribution link from that page to see some more useful and relevant information for our Week 3 concerns and COs.

Link (Links to an external site.)Links to an external site.

This is one kind of an example of using an “outside” source / resource to add to what is revealed in our Weekly Lesson in Modules and in our Weekly text book reading.

Please don’t forget to look over the Graded Discussion Posting Rubric each Week to be certain that you are meeting all of the Frequency requirements as well as all of the Quality requirements for graded discussion posting each Week.

If you have any questions about anything, please do not hesitate to post in the Q & A Forum discussion posting area or to send me a direct e-mail message to  CSmith10@chamberlain.edu

Thanks Friends and Good Luck !  Work hard and learn a lot !!

Sincerely,  Mr. Smith     Chamberlain University     Math, Statistics, and Quantitative Research

“Anyway, try these steps: in excel, you’ve highlighted your graph or chart or whatever, and copied it, then you go into a Word doc and paste it by right-clicking and pasting it as a picture.  Once it appears, then highlight that picture, right-click again, and scroll down to Save as Picture. You’re not saving the whole Word document, just that image. Then you need to save it somewhere convenient on your computer, give it a name, and select JPEG File Interchange Format from the drop down menu as the file type.  Next is the matter of getting that file into Chamberlain.  The direction in the video didn’t work for me.  I found a folder with my name on it preceded by three letters, but the upload link associated with that folder didn’t work. This is where the helpdesk came in. In the files section, at the bottom of the page is a clickable link called All My Files. Go there, and then you’ll see a new place with an upload button that actually works.  There’s also a folder button, so I created a new folder for this class and uploaded my charts in there. After that, I was able to embed the charts into the text of my post using the embed image button as described in the video.

I hope this works for you!!


Required Resources

Read/review the following resources for this activity:

  • OpenStax Textbook: Chapter 2
  • Lesson
  • Chamberlain University Library
  • Internet


This week’s lab highlights the use of graphics, distributions, and tables to summarize and interpret data.

Follow the directions below to find one of the given academic articles from the Chamberlain library and then use that to describe the graphs and tables included. Further, you will describe other ways that the same data could be presented.


The deliverable is a Word document with your answers to the questions posed below based on the article you find.

Required Software

  • Microsoft Word
  • Internet access to read articles

Steps to Complete Week 3 Lab


Step 1: For our first broad-based search, choose one of the articles listed below that interests you.  Use the underlined words in your chosen article to search and see how many articles from the Pro-Quest Nursing database contain these underlined words (see the example below the article list)

Article Titles (choose one!)

  1. Oral manifestations in diabetic patients under treatment for ischemic heart diseases: A comparative observational study
  2. Systolic blood pressure , diastolic blood pressure, and pulse pressure: An evaluation of their joint effect on mortality
  3. The Relationship Between Body Mass Index (BMI) and Menstrual Disorders at Different Ages of Menarche and Sex Hormones
  4. Adolescents’ first tobacco products: Associations with current multiple tobacco product use
  5. Association of lifestyle modification and pharmacological adherence on blood pressure control among patients with hypertension at Kenyatta National Hospital, Kenya: A cross-sectional study
  6. Demographic, parental, and personal factors and youth athletes’ concussion -related knowledge and beliefs
  7.  Nutrition-related information-seeking behaviors of women trying to conceive and pregnant women: evidence for the life course perspective.
  8. Efficiency and optimal size of hospitals: Results of a systematic search
  9. Long working hours, sleep-related problems, and near-misses/injuries in industrial settings using a nationally representative sample of workers in Japan
  10. Demographic Characteristics of RN and Generic Students: Implications for Curriculum
  11. Clinical Characteristics of Diabetic Ketoacidosis in Children with Newly Diagnosed Type 1 Diabetes in Addis Ababa, Ethiopia: A Cross-Sectional Study
  12. Using Computerized Adaptive Testing to Reduce the Burden of Mental Health Assessment

Step 2: Go to the Chamberlain Library at https://library.chamberlain.edu (Links to an external site.) 

Step 3: Click on the ProQuest Nursing link under the search box.

week 3 discussion: measures of central tendency and variation

Step 4: Type the underlined words from the article that you chose into the first search bar. Checkmark Full Text, Peer Reviewed, and choose Last 12 Months from the drop down list.  Last, choose English Language under the language section.

week 3 discussion: measures of central tendency and variation

Step 5: Choose Search to see how many articles in the ProQuest database have those words.

week 3 discussion: measures of central tendency and variation

Step 6: Post a screenshot of your search results (topic and the number of articles containing your search terms) to the top of a Word document [see Step 5 above]. Below the screenshot, answer the following questions:

On your search:

    A. What terms did you use?

    B. What other things did you mark on the search page before conducting your search?

    C.Why did you choose the key words that you did?

    D. How many articles were found with these search terms [from screenshot]?

Part 2:

Step 1: For our second more narrow search, go back and search using THE ENTIRE TITLE of the article you used the key words from in your first search.  Paste the ENTIRE title into the search bar and find the full article [Do NOT checkmark anything to narrow your search this time!].

Step 2: Find a frequency table and/or graph within the article and post a screen shot in your Word document.


       Frequency Distribution      OR            Graph

week 3 discussion: measures of central tendency and variation
week 3 discussion: measures of central tendency and variation

Step 3: Answer the following questions about your table and/or graph:

    A. What type of study is used in the article (quantitative or qualitative)?

    B. What type of graph or table did you choose for your lab? What characteristics make it this type?

    C. Describe the data displayed in your frequency distribution or graph (consider class size, class width,             total frequency, list of frequencies, class consistency, etc)

    D. Draw a conclusion about the data from the graph or frequency distribution you chose.

    E. How else might this data have been displayed? Discuss pros and cons of 2 other presentation                     options, such as tables or different graphical displays.

    F. Give the full APA reference of the article you are using for this lab.

Step 5: Be sure your name is on the Word document, save it, and then submit it under “Assignments” and “Week 3: Lab”.


This activity will be graded based on the Week 3 Lab Rubric.

Professor and Class,

My data set is as follows: 68,73,78,80,85,91,95,99,100,112

This data was collected on my unit at work. The population I collected from were all nurses that I work with ranging in age from 21-37 years-of-age. Fitness level and health also varied. Also, not everyone was doing the same thing, giving a perspective of active versus resting heart rate.

Mean: 88

Median: 88

Mode: N/A; no value appears more than once

Range: 44

Outliers: None. To figure out if there were any outliers in my data set, I utilized the interquartile range formula. This also results in a symmetrical graph of the data.

This data set is a sample of the people I work with, not a whole population. Therefore, the standard deviation is 13.6789.

Being that there were no outliers in my data set either the mean or median would work to measure central tendency of the data. If the data presented had an outlier the better suited measure of central tendency would be the median (Holmes, Illowsky, & Dean, 2017). With the lack of outliers, I chose to plot the data using a box and whisker plot. A box and whisker plot is a visually effective way to plot variations in data that shows all aspects of the data set (What is a Box and Whisker Plot, 2020).

excel week 3 discussion.jpg

box and whisker plot week 3 discussion.png

Brennaa Sullivan


Holmes, A., Illowsky, B., & Dean, S. (2017). Introductory Business Statistics. OpenStax.

What is a box and Whisker Plot? (2020). American Society for Qualityhttps://asq.org/quality-resources/box-whisker-plot

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