 # Statistics Exam Questions: Discrete Probability Distribution

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How to finding E(X) and Var(X) for discrete probability distributions?

A-Level Statistics : Edexcel S1 January 2007 Q3a,b
The question is on discrete probability distributions, finding E(X) and Var(X).
A-Level Statistics Edexcel S1 January 2007 Q3c,d,e
This is the worked solution to question 3c,d,e from the Edexcel Statistics S1 paper for January 2007. The question is on discrete probability distributions, finding E(X) and Var(X).

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