13–34 Inferential Statistics and Distributions
8250FC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:39 PM Printed: 10/27/05 2:57
PM Page 34 of 36
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)
geometpdf( computes a probability at x, the number of the trial
on which the first success occurs, for the discrete geometric
distribution with the specified probability of success p. 0
p1
must be true. x can be an integer or a list of integers. The
probability density function (pdf) is:
fx p p x
x
() ( )=− =
−
112
1
,,,K
geometpdf(p,x)
geometcdf( computes a cumulative probability at x, the number
of the trial on which the first success occurs, for the discrete
geometric distribution with the specified probability of success
p. 0
p1 must be true. x can be a real number or a list of real
numbers.
geometcdf(p,x)
Distribution Functions (continued)
poissoncdf(
geometpdf(
geometcdf(
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