User Manual
20090601
Example
Poisson cumulative probability : 0.8074
Mean : 2.26
• Statistics Wizard Operation
(1) On the menu bar, tap [Calc] and then [Distribution].
(2) Select [Inverse Poisson CD] and then tap [Next >>].
(3) Input values.
(4) Tap [Next >>].
S
Program, eActivity or Main Application
Command: InvPoissonCD
:
Command Syntax
prob
 value, 
L
 value
Input Example:
InvPoissonCD 0.8074,2.26
I
 Geometric Distribution 
Geometric Distribution Probability 
Menu: [Distribution]-[Geometric PD]
Description: This command calculates the probability the random variable that follows a 
geometric distribution will be a given 
x
 value. 
f
 (x)
= p(1– p)
x – 1
 (
x
 = 1, 2, 3, ···) 
p 
: probability of success     
 (0 
p
 1)
Definition of Terms 
x 
:  specified trial (positive integer)
pos 
: probability of success 
p
 (0 
p
 1) 
Calculation Result Output 
prob 
:  geometric probability 
7-11-20
Distributions 










