Poissonpdf; Poissoncdf - Texas Instruments TI-83 Manual Book

poissonpdf(

computes a probability at
poissonpdf(
distribution with the specified mean m, which must be a real number > 0.
can be an integer or a list of integers. The probability density function
x
(pdf) is:
x
f ( x ) e /
m
poissonpdf( , x )

poissoncdf(

computes a cumulative probability at
poissoncdf(
Poisson distribution with the specified mean m, which must be a real
number > 0. can be a real number or a list of real numbers.
x
m
poissoncdf( , x )
TI-83 Plus Inferential Statistics and Distributions

x , ! x 0 1 , , 2 ,
for the discrete Poisson
x
for the discrete
x
432