TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App ‡ Distr (Distribution) Menu 132
Chi-square Pdf
Description
‡ (
Distr) Æ 7:Chi-square Pdf
Chi-square Pdf
computes the probability density function for the c
2
(chi-square)
distribution at a specified
X Value for the specified Deg of Freedom, df.
To plot the c
2
distribution, paste c2pdf( to the Y= editor.
The probability density function (pdf) is:
fx
df
xex
df df x
()
()
(1/2)=≥
--
1
2
0
221 2
G /
,
// /
Inputs
X Value A scalar or list of values at which to evaluate the c
2
(chi-square) pdf.
Deg of Freedom, df A scalar value for degrees of freedom; must be an integer > 0.
Outputs
Pdf A c
2
(chi-square) pdf value or list of values. Values are stored to pdf.
X Value A scalar or list of integer event numbers.
df A scalar value for degrees of freedom.
Example
1. Press ‡(Dist) and select 7:Chi-square Pdf to display the Chi-square Pdf input dialog
box.
2. Enter the arguments as shown below.
3. Press b to compute the data.
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