Casio FX-9750G PLUS User's Manual & Technical Reference page 339

Perform the following key operations to display a graph.
J
cc
6(DRAW)
u u u u u χ
distribution probability
2
χ distribution probability calculates the probability of χ
2
between two specific values.
df
1 1
2
p =
2
df
Γ
2
Perform the following key operations from the statistical data list.
5(DIST)
3(CHI)
2(Ccd)
Data is specified using parameter specification. The following shows the meaning
of each item.
Lower ............. lower boundary
Upper ............. upper boundary
df
.................... degrees of freedom (positive integer)
Execute .......... executes a calculation
To calculate χ
Example
value
For this example, we will calculate χ
when lower boundary = 0, upper boundary = 19.023, and
degrees of freedom = 9.
aw
bj.acdw
jw
1(CALC)
prob ................ χ
∫
b
df x
–1 –
x e dx
2 2
a
distribution probability for a specific parameter
2
distribution probability
2
Distribution
distribution data falling
2
a
: lower boundary
b
: upper boundary
distribution probability
2
18 - 8
311