FINALLY! Why we divide by N-1 for Sample Variance and Standard Deviation

The best and simplest explanation of why we divide the sample variance by n-1. This step-by-step explanation is clear and concise and makes sense! :)

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Ever wondered why we divide by N-1 for sample variance?
https://www.youtube.com/watch?v=9Z72nf6N938&feature=youtu.be

Simple Introduction to Hypothesis Testing:
http://www.youtube.com/watch?v=yTczWL7qJ-Y

A Simple Rule to Correctly Setting Up the Null and Alternate Hypotheses:
https://www.youtube.com/watch?v=R2hxisYFKxM&feature=youtu.be

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Видео FINALLY! Why we divide by N-1 for Sample Variance and Standard Deviation канала Dave Your Tutor