Texas Instruments TI-82 STATS Manual Book page 271

binompdf(
binomcdf(
poissonpdf(
computes a probability at x for the discrete binomial
binompdf(
distribution with the specified numtrials and probability of
success (p) on each trial. x can be an integer or a list of integers.
0p1 must be true. numtrials must be an integer > 0. If you do
not specify x, a list of probabilities from 0 to numtrials is
returned. The probability density function (pdf) is:
 
n
x
 
f x ( ) x p ( 1
 
where
numtrials
binompdf(
computes a cumulative probability at x for the
binomcdf(
discrete binomial distribution with the specified numtrials and
probability of success (p) on each trial. x can be a real number
or a list of real numbers. 0p1 must be true. numtrials must be
an integer > 0. If you do not specify x, a list of cumulative
probabilities is returned.
numtrials
binomcdf(
computes a probability at x for the discrete Poisson
poissonpdf(
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:
x
f x ( ) e / x
x
m
poissonpdf( , )
Inferential Statistics and Distributions 13–33
n x
p ) , x 0 1 , , ,
n = numtrials
p[ x ]
, , )
p[ x ]
, , )
! , x 0 1 2 K , , ,
n
K