The video you want to see is called "Standard
Deviation." You can get there from here: https://sites.google.com/a/uni.edu/resources-for-shaw/
or there is a direct link
here: http://www.makingsenselearning.net/library_hi-res/Problem_Solved/Standard_Deviation.mp4
Again - this is taking place of
lugging a textbook around all semester! So give it your undivided
attention!
DJS
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