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Ch.9 Probability, Expectation & Variance
Expected Value (07:57)
by patrickJMT
Things to note:
- Jot down all possible outcome (most important)
- Outcome may be negative
What is Variance in Statistics? (17:03)
by mathtutordvd
Things to note:
- Variance is a measure of dispersion (of data from the mean)
- Population variance differs from Sample variance
(Extra)Prove: Variance Shortcut Method for Discrete Random Variable (05:56)
by LetsSolveMathProblems
(Extra)Prove: The Sample Variance: Why Divide by n-1? (06:52)
by jbstatistics
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