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Chapter 2: Main Application
87
u
invTCDf
[Action][Distribution/Inv.Dist][Inverse][invTCDf]
Function: Returns the lower bound value of a Student’s
t
cumulative distribution probability for specified
values.
Syntax: invTCDf(
prob
,
df
[ ) ]
Calculation Result Output:
x
Inv
Example: To determine the lower bound value when
prob
= 0.0754752,
df
= 18
u
chiPDf
[Action][Distribution/Inv.Dist][Continuous][chiPDf]
Function: Returns the
χ
2
probability density for specified values.
Syntax: chiPDf(
x
,
df
[ ) ]
Calculation Result Output:
prob
Example: To determine the
χ
2
probability density when
x
= 2,
df
= 4
u
chiCDf
[Action][Distribution/Inv.Dist][Continuous][chiCDf]
Function: Returns the cumulative probability of a
χ
2
distribution between a lower bound and an upper bound.
Syntax: chiCDf(lower value, upper value,
df
[ ) ]
Calculation Result Output:
prob
Example: To determine the
χ
2
probability when lower value = 2.7,
upper value =
∞
,
df
= 4
u
invChiCDf
[Action][Distribution/Inv.Dist][Inverse][invChiCDf]
Function: Returns the lower bound value of a
χ
2
cumulative distribution probability for specified values.
Syntax: invChiCDf(
prob
,
df
[ ) ]
Calculation Result Output:
x
Inv
Example: To determine the lower bound value when
prob
= 0.6092146,
df
= 4
u
fPDf
[Action][Distribution/Inv.Dist][Continuous][fPDf]
Function: Returns the
F
probability density for a specified value.
Syntax: fPDf(
x
,
n
:
df
,
d
:
df
[ ) ]
Calculation Result Output:
prob
Example: To determine the
F
probability density when
x
= 1.5,
n
:
df
= 24,
d
:
df
= 19
u
fCDf
[Action][Distribution/Inv.Dist][Continuous][fCDf]
Function: Returns the cumulative probability of an
F
distribution between a lower bound and an upper bound.
Syntax: fCDf(lower value, upper value,
n
:
df
,
d
:
df
[ ) ]
Calculation Result Output:
prob
Example: To determine the
F
distribution probability when lower value = 1.5,
upper value =
∞
,
n
:
df
= 24,
d
:
df
= 19