What you’ll learn2 learning objectivesChoose one objective for a focused lesson, or study the complete topic.—AHL 4.13 (HL)—Bayes' theorem• Use Bayes' theorem for up to three events.• Connect to conditional probability and independent events.Syllabus objective—AHL 4.14 (HL)—Random variables and probability density• 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.Syllabus objective