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Lecture 4: Random Variables and Distributions

Lecture 4: RandomVariables and DistributionsGoals Working with Distributions in R Overview of discrete and continuousdistributions important in genetics/genomics Random VariablesRandom Variables ! "01-1A rv is any rule ( , function) that associatesa number with each outcome in the samplespaceTwo Types of Random Variables A discrete Random variable has acountable number of possible values A continuous Random variable takes allvalues in an interval of numbersProbability Distributions of RVsDiscreteLet X be a discrete rv.

• Random Variables. Random Variables! "-1 0 1 A rv is any rule (i.e., function) that associates a number with each outcome in the sample space. Two Types of Random Variables •A discrete random variable has a countable number of possible values •A continuous random variable takes all values in an interval of numbers.

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