Up there should be four (4) files:
STAT3743_xxxxxx.3gp (video for mobile phones)
STAT3743_xxxxxx.ogv (video in Ogg format)
STAT3743_xxxxxx.pdf (scanned lecture transcript)
STAT3743_xxxxxx.webm (video in WebM format)
The WebM video is definitely the highest quality, but
you need a compatible browser/player to watch it.
See How to watch the video for instructions to get one.
Mean as a measure of center
Variance as a measure of spread
Shortcut formula for variance
Mean of empirical distribution (sample mean)
Variance of the empirical distribution
Sample variance, sample standard deviation
Quantitative versus qualitative
Collect many examples of variables
Date: 2010-10-08 15:15:05 EDT
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