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I just uploaded a new Video, "Variance". It is part of the playlist on Variation, Variability, Dispersion, and Spread. Below are the 6 Keys to Understanding for this concept. See the videos page of this website for the latest status of available and planned videos. 
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Sums of Squares is an important concept in Variation, playing a major role in ANOVA and Regression. 4 Keys to Understanding and plenty of graphics help to give the viewer an good conceptual understanding.  For the latest status of available and planned videos, visit the Videos page of this website.
Just uploaded a new video: https://youtu.be/o0o-SWu7kLU  New video, Sampling Distribution, on the book's YouTube channel. This is also part of the playlist on Probability Distributions.  New Video, Skew, Skewness, uploaded to the book's channel. For a list of available and planned videos, see the Videos page on this website.  I just uploaded a new video.: https://youtu.be/3GCJU_RCgoM It's an addition to the playlist on Probability Distributions.  Check out the "Videos" page of this website for a list of completed videos and plans for upcoming videos.
Continuing to add videos on Distributions to the YouTube channel for the book. The latest is on the Exponential Distribution. This is the 9th in the playlist on Distributions. The Videos page of this website has the latest status on videos.    Viewers noticed 2 typos in this video -- my apologies. There was no way to revise the video on YouTube, so I had to delete it and upload a replacement. Here is the link to the corrected video youtu.be/KEq9X_x6xuM .
A new entry to the "Distributions" playlist on my YouTube Channel: F Distribution. There are 4 Keys to Understanding this concept. Here's the third:  See the videos page on this blog for a status of videos completed and planned.
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AuthorAndrew A. (Andy) Jawlik is the author of the book, Statistics from A to Z -- Confusing Concepts Clarified, published by Wiley. Archives
June 2018
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