311
Perform the following key operations to display a graph.
J
cc
6(DRAW)
uu
uu
uχ
2
distribution probability
χ
2
distribution probability calculates the probability of χ
2
distribution data falling
between two specific values.
p =
Γ
1
2
df
df
2
x e dx
2
1
df
2
–1
x
2
–
a
b
∫
a :lower boundary
b : upper boundary
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
Example To calculate χ
2
distribution probability for a specific parameter
value
For this example, we will calculate χ
2
distribution probability
when lower boundary = 0, upper boundary = 19.023, and
degrees of freedom = 9.
aw
bj.acdw
jw
1(CALC)
prob ................ χ
2
distribution probability
Distribution 18 - 8
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