Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 251

tpdf(x,df)
tcdf(
computes the Student-
tcdf(
specified (degrees of freedom), which must be > 0.
df
tcdf(lowerbound,upperbound,df)
2
pdf(
c
2
computes the probability density function (
pdf(
c
specified value. (degrees of freedom) must be an integer > 0. To plot the c
x df
2
to the Y= editor. The probability density function (
pdf(
c
1
df/2
f x ( ) ( )
-------------------- 1/2
=
Γ df 2 ⁄ ( )
Note: For this example,
Xmin = 4.5
L
Xmax = 4.5
Ymin = 0
Ymax = .4
distribution probability between
t
⁄
df 2 1 – – x/2
≥
x e , x 0
Chapter 13: Inferential Statistics and Distributions
lowerbound
2
) for the c (chi-square) distribution at a
pdf
) is:
pdf
and for the
upperbound
2
distribution, paste
244