Degrees of Freedom Explanation - Why We Use n-1 (Week 11B)

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Research By Design
Published at : 15 Dec 2021
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Using a classic outer space example with Martians and Robots, we will adjust our interval calculations by subtracting 1 from our sample size (n-1). We take a brief detour to figure out what are degrees of freedom and why we use n-1. Degrees of freedom are the number of independent pieces of information that go into our calculations. When we estimate a population mean from a sample, we lock down one parameter and reduce our degrees of freedom by 1.

Lecture date: Tuesday, April 13, 2021
Missouri State University

Statistics Instructors: you are free to link to this video and the playlist for your seated or online statistics course or for other educational purposes.

Edited in Camtasia 2020
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Link to a Google Drive folder with any files that I use in the videos including spreadsheets, the Bear Handout, the DogToys2.xlsx dataset, and the Normal Distribution MultiTool. As I add new files, they will appear here, as well.
https://drive.google.com/drive/folders/1n9aCsq5j4dQ6m_sv62ohDI69aol3rW6Q?usp=sharing
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