TI-83 Plus Inferential Statistics and Distributions 428
tcdf(lowerbound,upperbound,df)
c2pdf(
c2pdf( computes the probability density function (pdf) for the c2
(chi-square) distribution at a specified x value. df (degrees of freedom)
must be an integer > 0. To plot the c2 distribution, paste c2pdf( to the Y=
editor. The probability density function (pdf) is:
0,2)/(1
)2/(
1
)( 2/12/2/ ≥
Γ
=−− xex
df
xf xdfdf
c2pdf(x,df)
Note: For this example,
Xmin = 0
Xmax = 30
Ymin = L.02
Ymax = .132