IB Maths AI SL Topic 4.7 Notes: Discrete Random Variables and Expected Value
These notes support teaching and revision of discrete random variables and expected value for IB Maths AI SL. Students work with discrete probability distributions, check that probabilities sum to 1, find missing constants, calculate probabilities and use E(X) = Σxp(x) to find expected value. The notes also explore fair games through expected profit.
The resource includes student notes and a teacher copy with worked solutions and explanations, supporting direct instruction, guided practice and independent review.
Use the notes with the lesson slides and the practice worksheet with answer key.
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