tpdf
Student’s T probability density function (PDF).
For each element of x, compute the probability density function (PDF) of the Student’s T distribution with df degrees of freedom. The size of y is the common size of x and df. A scalar input functions as a constant matrix of the same size as the other input.
Further information about the Student’s T distribution can be found at https://en.wikipedia.org/wiki/Student%27s_t-distribution
See also: tcdf, tpdf, trnd, tstat
Source Code: tpdf
## Plot various PDFs from the Student's T distribution
x = -5:0.01:5;
y1 = tpdf (x, 1);
y2 = tpdf (x, 2);
y3 = tpdf (x, 5);
y4 = tpdf (x, Inf);
plot (x, y1, "-b", x, y2, "-g", x, y3, "-r", x, y4, "-m")
grid on
xlim ([-5, 5])
ylim ([0, 0.41])
legend ({"df = 1", "df = 2", ...
"df = 5", 'df = \infty'}, "location", "northeast")
title ("Student's T PDF")
xlabel ("values in x")
ylabel ("density")
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