7-11-22

Distributions

Inverse Geometric Cumulative Distribution

Menu: [Distribution]-[Inverse Geo CD]

Description: This command calculates the inverse of the geometric cumulative distribution.

m

Σ

x = 1

Minimum value of the upper bound of summation which satisfies the inequality m =? (positive integer)

Definition of Terms

prob :� ���������geometric ����������cumulative �����������probability ��(0 <prob <1)

pos :� �����������probability ��of �������success p (0 <p <1)

Calculation Result Output

xInv :� inverse geometric cumulative distribution

*xInv :� recalculation value (Displayed only when there may be a possiblility of rounding error.)

•To account for possible rounding error, ClassPad additionally obtains the result using the probability that is next lowest for the least significant digit.

For example, if the probability is 0.875, ClassPad would recalculate using 0.874. The recalculation result is only shown if it is different from the original one.

Example

Geometric cumulative probability :� 0.875

Probability of success :� 0.5

•Statistics Wizard Operation

(1)On the menu bar, tap [Calc] and then [Distribution].

(2)Select [Inverse Geo CD] and then tap [Next >>].

(3)Input values.

(4)Tap [Next >>].

uProgram, eActivity or Main Application

Command: InvGeoCD

Command Syntax

prob value, p-value

Input Example:

InvGeoCD 0.875,0.5

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