Casio fx-9750G PLUS - Manual (Page 336)

308
k k k k k 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