TI-83 Plus Inferential Statistics and Distributions 429
c2cdf(
c2cdf( computes the c2 (chi-square) distribution probability between
lowerbound and upperbound for the specified df (degrees of freedom), which
must be an integer > 0.
c2cdf(lowerbound,upperbound,df)
Üpdf(
Üpdf( computes the probability density function (pdf) for the Û distribution
at a specified x value. numerator df (degrees of freedom) and denominator df
must be integers > 0. To plot the Û distribution, paste Üpdf( to the Y=
editor. The probability density function (pdf) is:
0,)/1(
)2/()2/(
]2/)[(
)( 2/)(12/
2/ ≥+
ΓΓ
+Γ
=+−− xdnxx
d
n
dn
dn
xf dnn
n
where n = numerator degrees of freedom
d = denominator degrees of freedom