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Example: To determine the minimum number of trials when prob = 0.8074, L = 2.26
Menu Item: [Action][Inv. Distribution][invPoissonCDf]
For more information, see “Inverse Poisson Cumulative Distribution” on page 7-11-19.
S geoPDf
Function: Returns the probability in a geometric distribution that the success will occur on
a specified trial.
Syntax: geoPDf(
x, pos [ ) ]
Example: To determine the geometric probability when
x = 6, pos = 0.4
Menu Item: [Action][Distribution][geoPDf]
For more information, see “Geometric Distribution Probability” on page 7-11-20.
S geoCDf
Function: Returns the cumulative probability in a geometric distribution that the success
will occur between specified lower value and upper value.
Syntax: geoCDf(lower value, upper value,
pos [ ) ]
Example: To determine the geometric probability when
lower value = 2, upper value = 3,
pos = 0.5
Menu Item: [Action][Distribution][geoCDf]
For more information, see “Geometric Cumulative Distribution” on page 7-11-21.
S invGeoCDf
Function: Returns the minimum number of trials of a geometric cumulative probability
distribution for specified values.
Syntax: invGeoCDf(
prob, pos [ ) ]
Important!
When executing the invGeoCDf function the calculator uses the specified prob value
and the value that is one less the prob value minimum number of significant digits (*prob
value) to calculate minimum number of trials values. The results are assigned to the
system variables xInv (calculation result using prob) and *xInv (calculation result using
*prob). The invGeoCDf function always returns the xInv value only. However, when the
xInv and *xInv values are different, the warning message shown below appears showing
both values.
2-8-55
Using the Action Menu