Variance of independent sums
Variances add for independent variables, a rule that does not generally hold for dependent variables.
4 minutes. No sign-up needed.
This lesson is part of the Probability course.
Example plan3 lessons · 13 min
Linearity of expectation3 min
Variance of independent sumsExpectation and spread4 min
Challenge: Expectation and spreadExpectation and spread6 min
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