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20050501
χ
2
Distribution Probability
Command: ChiCD 䡺
Description: This command calculates the probability of
χ
2
distribution data falling between
a and b.
p =
Γ
1
2
df
df
2
x e dx
2
1
df
2
–1
x
2
–
a
b
a : lower boundary (Lower)
b : upper boundary (Upper)
Command Syntax
Lower value, Upper value, df value
Definition of Terms
Lower : lower boundary
Upper : upper boundary
df : degrees of freedom (positive integer)
Input Example:
ChiCD 0.76,3,4
Calculation Result Output
p :
χ
2
distribution probability
k F Distribution
F Probability Density
Command: FPD 䡺
Description: This command calculates the probability density of F distribution from a
specified x value.
Γ
n
2
x
d
n
n
2
–1
2
n
Γ
2
n + d
Γ
2
d
d
n
.
x
1 +
n + d
2
f (x) =
–
Command Syntax
x value, n:df value, d:df value
Definition of Terms
x : data value
n:df : degrees of freedom of numerator (positive integer)
d:df : degrees of freedom of denominator (positive integer)
7-11-6
Distribution
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