Calculating Percentiles for Evaluation and Comparison

TIME-STAMPS
00:00 – Intro
00:30 – The utility of percentiles
01:18 – Definition of Percentile
03:03 – Standard Score Definition
04:49 – Floor Effects and Ceiling Effects
06:56 – Quartiles and Deciles
07:29 – Determine Percentile from Score
09:26 – Determine Score from Percentile
10:26 – Example from Rank Order Distribution
11:58 – Example from Simple Frequency Distribution
12:58 – Example from Grouped Frequency Distribution
15:25 – Where to Head Next

RESOURCES MENTIONED
Weir, J. P., & Vincent, W. J. (2020). Statistics in kinesiology. Human Kinetics Publishers.

#statistics #percentiles #DrGoodin
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Dr. Jacob Goodin is a professor of kinesiology at Point Loma Nazarene University (PLNU), and holds a PhD in Sport Physiology and Performance from East Tennessee State University. He has over a decade of experience as a strength and conditioning coach and sport scientist from the high school to NCAA Division I levels. In addition to his role as a professor and research mentor, Dr. Goodin directs the Athlete Monitoring Initiative at PLNU, which provides testing and monitoring services to over 200 athletes yearly as well as research opportunities for kinesiology students.

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[luciavaldez]

I really appreciate how you sued real life examples to explain how percentiles work. I had always heard about percentiles but was always a little confused about how they work. Hearing you use real life examples made it a lot easier to understand.

[Alana_]

I appreciate you walking through each chapter of the book. I was struggling trying to understand how to calculate percentiles, but after watching this video it gave me a better understanding.

[sarahcox]

The clarification on why being at the top and still getting pr’s doesn’t move you up a whole bunch was really nice and helpful!

[JulissanJuarez]

The key terms and definitions that you provide are very helpful because not only do you define them but you go into depth with examples and that is very helpful. Thank you!

[madelinejewelnebril]

I really like that you summarized the steps for calculating percentile. It makes it look much easier than I initially thought.

[JacobCampman]

Thank you for walking us through each chapter of the book. It is really helpful having someone explain everything while I read the information.

[clairemasterson]

Percentiles are no longer an unknown known thing. The explanations really helped me to better understand everything!

[noelledarquea]

Percentiles are always such a helpful term to know. How to use create them and how to read them! Thank you for not only showing us how to determine the percentile from a score but to determine the percentile in the group frequency distribution

[jupshaw]

This video allowed me to gain a deeper understanding of percentiles and what they actually are. I have always seen them while looking through sheets of data as a way to essentially rank something or someone.

[karatemplin]

Thank you for breaking down these topics in video form! I tried a problem by looking at the book first, got stuck, and then realized you are explaining what the book teaches exactly, but in a more digestible way.

[jonathanshimasaki]

this will definitely aid me in providing proper statistics with my future patients

[caleighgarcia]

I liked how you explained how to find the scores and percentiles. It really helped me understand more.

[everoche]

I was never explained to what percentiles meant in regard to academic tests or medical tests, so I now understand very clearly! Comparing measurements of different exercises was also never something I would have thought about being able to do, thanks for showing me how!

[BrianaReynoso]

You made a very intimidating topic much more approachable with your summarization, thank you!

[dimitricarrion]

Great job going over percentiles professor. I liked how you explained when exactly people can make the biggest percentile jumps when using the example of people squatting.

[alanaguinaldo]

Another video with amazing explanations. You made all of the different calculations easy to comprehend, especially with the inclusion of various examples. Thank you!

[Moniiiqueee]

I had absolutely no idea ceiling and floor effects. So thank you for going over it and explaining it! The examples and visuals also help as well. Great video!!

[vanessaviramontesPLNU]

Dr. Goodin,
This was an amazing video to introduce quartiles. I have never understood what it meant to be in a certain quartile, and because of you now I can figure it out myself. It was much easier than I thought.

[Chasebowen]

Really good examples of the percentiles of the weight lifters. It makes a lot of sense.

[AlexBCarr]

Overall, calculating scores or percentiles provides a standardized and objective way to evaluate and compare athletes, enabling informed decision-making and targeted performance improvement strategies.

Great Video.

-Alex