Chi ^2 cdf, Fpdf – Texas Instruments TI-83 PLUS User Manual
Page 432
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TI-83 Plus
Inferential Statistics and Distributions
429
c
2
cdf(
c
2
cdf(
computes the
c
2
(chi-square) distribution probability between
lowerbound
and
upperbound
for the specified
df
(degrees of freedom), which
must be an integer > 0.
c
2
cdf(
lowerbound
,
upperbound
,
df
)
Ü
pdf(
Ü
pdf(
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
Ü
pdf(
to the
Y=
editor. The probability density function (pdf) is:
0
,
)
/
1
(
)
2
/
(
)
2
/
(
]
2
/
)
[(
)
(
2
/
)
(
1
2
/
2
/
≥
+
Γ
Γ
+
Γ
=
+
−
−
x
d
nx
x
d
n
d
n
d
n
x
f
d
n
n
n
where
n
= numerator degrees of freedom
d
= denominator degrees of freedom
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