**Unformatted text preview: **tly distributed random variables. • We almost never record just a single number. • For example, record height AND weight. • Or a whole sample’s worth of height and weight pairs. • Height is a random variable • So is weight • So with all the heights and weights in the sample • And they are jointly distributed The mathema4cal version: several func4ons deﬁned on the sample space. Joint probability mass func4on • Pair of discrete variables • Joint probability mass func4on – P(X=x, Y=y) = p(x,y) •...

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