20070201
k Student- t Distribution
u Student- t Probability Density
Student-t probability density calculates t probability density from a specifi ed x value.
Perform the following key operations from the statistical data list.
5(DIST)
2(t)
1(tpd)
Data is specifi ed using parameter specifi cation. The following shows the meaning of each
item.
x .................................data
df ................................ degrees of freedom ( df > 0)
Save Res ....................list for storage of calculation results (None or List 1 to 26)
Execute .......................executes a calculation or draws a graph
After setting all the parameters, use c to move the highlighting to “Execute” and then press
one of the function keys shown below to perform the calculation or draw the graph.
• 1(CALC) ... Performs the calculation.
• 6(DRAW) ... Draws the graph.
Calculation Result Output Example
p .................................. Student-
t probability density
(x) =
Γ
Γ
df
π
–
df+1
2
2
df
2
df + 1
df
x
2
1+
(x) =
Γ
Γ
df
π
–
df+1
2
2
df
2
df + 1
df
x
2
1+
# Current V-Window settings are used for
graph drawing when the Setup screen’s [Stat
Wind] setting is [Manual]. The V-Window
settings below are set automatically
when the [Stat Wind] setting is [Auto].
Xmin = –3.2, Xmax = 3.2, Xscale = 1,
Ymin = –0.1, Ymax = 0.45, Yscale = 0.1
6-7-7
Distribution
