Casio CFX-9970G User Manual page 328

18 - 8
Distribution
Perform the following key operation to display a graph.
u u u u u Student-t distribution probability
Student-
falling between two specific values.
Perform the following key operation from the statistical data list.
Data is specified using parameter specification. The following shows the meaning
of each item.
Example
J
cc
6(DRAW)
t
distribution probability calculates the probability of
df + 1
- b
2 *
p =
df
$
df a
-
2
5(DIST)
t
2(
)
2(tcd)
Lower ............. lower boundary
Upper ............. upper boundary
df
.................... degrees of freedom (
Execute .......... executes a calculation
To calculate Student-
parameter value
For this example, we will calculate Student-
probability when lower boundary = –2, upper boundary = 3, and
degrees of freedom = 18.
-cw
dw
biw
1(CALC)
prob ................ Student-
df +1
–
2
1 + x 2
dx
df
df
> 1)
t
distribution probability for a specific
t
distribution probability
t
distribution data
a
: lower boundary
b
: upper boundary
t
distribution
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