TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App ‡ Distr (Distribution) Menu 129
t Pdf
Description
‡ (
Distr) Æ 5:t Pdf
t Pdf
computes the probability density function for the Student-t distribution at a
specified
X Value.
The probability density function (pdf) is:
fx
df
df
xdf
df
df
()
[( ) ]
()
()
()
=
++
-+
G
G
12
2
1
2
12
/
/
/
/
p
Inputs
X Value A scalar or list of values at which to evaluate the Student-t pdf.
Deg of Freedom, df A scalar value for degrees of freedom; must be > 0.
Outputs
Pdf A Student-t 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.
Output statistic variables are stored in the STATVARS folder.
Example 1
1. Press ‡(
Dist) and select 5:t Pdf to display the t Pdf input dialog box.
2. Enter the arguments as shown below.
3. Press b to compute the data.
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