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EX: Expected Value and Variance

Description

Expected Value and Variance for the distribution of a discrete random variable. (For didactical purposes..)

Usage

EX(x, p)
VarX(x, p)

Value

numeric value

Arguments

x

the values of the random variable

p

the probabilities of the values

Author

Andri Signorell <andri@signorell.net>

Examples

Run this code
EX(x=c(1:3), p=c(0.2, 0.5, 0.3))
VarX(x=c(1:3), p=c(0.2, 0.5, 0.3))

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