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TI-83 Plus Inferential Statistics and Distributions 432
poissonpdf(
poissonpdf(
computes a probability at
x
for the discrete Poisson
distribution with the specified mean
m
, which must be a real number > 0.
x
can be an integer or a list of integers. The probability density function
(pdf) is:
,2,1,0,!/)(
==
−
xxexf
x
µ
µ
poissonpdf(
m
,
x
)
poissoncdf(
poissoncdf(
computes a cumulative probability at
x
for the discrete
Poisson distribution with the specified mean
m
, which must be a real
number > 0.
x
can be a real number or a list of real numbers.
poissoncdf(
m
,
x
)