Moments for Linear Combinations of Independent Random Variables
Free SOA Exam P (Probability) lesson in Multivariate Random Variables. 17 min read, ~2,535 words.
Mean is linear (always):, no independence needed. Variance under independence:, coefficients SQUARED. Constants vanish from variance:. Sample mean: for iid variables. Second moment:.
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- Example 2
- Example 3
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- 3h
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