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311
kk
kk
k F Distribution
You can use the following menu to select from the different types of F distribution.
•{Fpd}/{Fcd} ... {F probability density}/{F distribution probability} calculation
uu
uu
uF probability density
F
probability density calculates whether data taken from a F distribution is less
than a specific value.
Γ
n
2
x
d
n
n
2
–1
2
n
Γ
2
n + d
Γ
2
d
d
nx
1 +
n + d
2
f
(x) =
–
(x > 0)
Perform the following key operation from the statistical data list.
5(DIST)
4(F)
1(Fpd)
Data is specified using parameter specification. The following shows the meaning
of each item.
x ..................... data
n-df ................. numerator degrees of freedom (positive integer)
d-df .................denominator degrees of freedom (positive integer)
Execute .......... executes a calculation or draws a graph
Example To calculate F probability density for a specific parameter
value
For this example, we will calculate
F probability density when
x = 1, n-df = 24, and d-df = 19.
bw
cew
bjw
1(CALC)
p(x) ................. F probability density
Perform the following key operation to display a graph.
J
ccc
6(DRAW)
Distribution 18 - 8
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