Casio CFX-9850G PLUS, Руководство пользователя и техническое справочное руководство

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312
k k
k k 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
u u u u u
F
probability density
F
probability density calculates the probability density function for the
F
distribution at a specified
x
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 operations 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.
b
w
ce w
bj w
1
(CALC)
p ( x ) ................. F probability density
Perform the following key operations to display a graph.
J
ccc
6
(DRAW)
18 - 8
Distribution