Casio fx-9750G PLUS User Manual
Page 336
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Student-t Distribution
You can use the following menu to select from the different types of Student-
t
distribution.
• {
tpd}/{tcd} ... {Student-
t
probability density}/{Student-
t
distribution probability}
calculation
u
u
u
u
u
Student-t probability density
Student-
t
probability density calculates
t
probability density from a specified
x
value.
f
(x) =
Γ
Γ
df
π
–
df
+1
2
2
df
2
df
+ 1
df
1 + x
2
Perform the following key operations from the statistical data list.
5
(DIST)
2
(
t
)
1
(tpd)
Data is specified using parameter specification. The following shows the meaning
of each item.
x
..................... data
df
.................... degrees of freedom (
df
>0)
Execute .......... executes a calculation or draws a graph
Example
To calculate Student-
t
probability density for a specific
parameter value
For this example, we will calculate Student-
t
probability density
when
x
= 1 and degrees of freedom = 2.
bw
cw
1
(CALC)
p
(
x
) ................. Student-
t
probability density
18 - 8
Distribution
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