Stats - Unit 6 cdf rules and bi, geo, and pois cdf equations and E(X) equations (everything else I have down or will be put up)

x <= x

cdf

x => x

1 - cdf(x - 1)

x < x

cdf(x - 1)

x > x

1 - cdf(x)

Binomial equation (x <= x)

P(x=0)+…P(x=x)

Geometric equation (x <= x)

P(x=1)+…P(x=x)

Poisson equation (x <= x)

P(x=0)+…P(x=x)

E(X) of discrete random variables

add up X*P

Binomial e(x)

n*p

Geometric e(x)

1/p

Poisson e(x)

lambda (so events/interval)