IB Maths AA HL AHL 4.14 (HL)—Random variables and probability density Question Bank

• Use variance of a discrete random variable.

• Use continuous random variables and probability density functions, including piecewise functions.

• Find mode, median, mean, variance and standard deviation for random variables.

• Use E(X), E(X^2), Var(X)=E(X^2)-[E(X)]^2 and linear transformations.