Probability & Statistics 2 6.2 Linear combinations of random variables 6.2.1 Expectation and variance under linear transformations Key ConceptsLearn FirstLoading… Key FormulasKnow TheseLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading… 9709-P6-SUB-6.2.1-115 QuestionsLoading… 9709-P6-SUB-6.2.1-215 QuestionsLoading…