Important!

When executing the Inverse Binomial Cumulative Distribution calculation, the calculator uses the specified Area value and the value that is one less than the Area value minimum number of significant digits (>Area value) to calculate minimum number of trials values.

The results are assigned to system variables xInv (calculation result using Area) and >xInv (calculation result using >Area). The calculator always displays the xInv value only. However, when the xInv and >xInv values are different, the message shown below will appear with both values.

The calculation results of Inverse Binomial Cumulative Distribution are integers. Accuracy may be reduced when the first argument has 10 or more digits. Note that even a slight difference in calculation accuracy affects calculation results. If a warning message appears, check the displayed values.

IPoisson Distribution

• Poisson Probability

(DIST)(E)(POISN)(PPd)

Poisson Probability calculates a probability at a specific single x-value or each list element for the discrete Poisson distribution with the specified mean.

Calculation Result Output Examples

When a list is specified

When variable (x) is specified

• There is no graphing for Poisson Probability.

• Poisson Cumulative Distribution

(DIST)(E)(POISN)(PCd)

Poisson Cumulative Distribution calculates the cumulative probability in a Poisson distribution that the success will occur on or before a specified trial.

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