TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App ‡ Distr (Distribution) Menu 138
Poisson Pdf
Description
‡ (
Distr) Æ D:Poisson Pdf
Poisson Pdf
computes a probability (pdf) at X Value for the discrete Poisson distribution
with the specified mean (
l).
The probability density function (pdf) is:
f(x) = e
Nl
l
x
/x! , x = 0,1,2,...
Inputs
l A Poisson process mean; must be a real number > 0.
X Value A scalar or list of integer event numbers; must be | 0.
Outputs
Pdf A Poisson pdf value or list of values. Values are stored to pdf.
X Value A scalar or list of integer event numbers.
l A Poisson process mean.
Output statistic variables are stored in the STATVARS folder.
Example
1. To select
D:Poisson Pdf, press:
¦ ‡(Dist) j D for the TIL89
¦ ‡(Dist) D for the TIL92 Plus / Voyage™ 200 PLT
to display the Poisson Pdf input dialog box. Enter the arguments as shown below.
2. Press b to compute the data.
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