Inferential Statistics and Distributions 13-33
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 33 of 36
binompdf( computes a probability at x for the discrete
binomial distribution with the specified numtrials and
probability of success (p) on each trial. x can be an integer
or a list of integers. 0p1 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:
fx n
xpp x n
xnx
() ( )
=
−=
−
101
,,,,
where n = numtrials
binompdf(numtrials,p[,x])
binomcdf( computes a cumulative probability at x for the
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. 0p1 must be true.
numtrials must be an integer > 0. If you do not specify x, a
list of cumulative probabilities is returned.
binomcdf(numtrials,p[,x])
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:
fx e x x
x
() !==
−µµ/, ,,,
012
poissonpdf(
m
,x)
binompdf(
binomcdf(
poissonpdf(