User Manual

Table Of Contents
18-1
Chapter 18 Distribution
(fx-CG50, fx-CG50 AU only)
In the Distribution mode, you can perform the eight distribution calculations below.
Discrete distributions: Binomial, Poisson, Geometric, Hypergeometric
Continuous distributions: Normal, Student-
t,
2
, F
To calculate probability values and draw a distribution graph, select a distribution type and
then input parameter values. You can also perform inverse calculation to determine the value
of x from a probability value.
1. Distribution Mode Overview
k Operation Flow
You can use the three steps below to display distribution calculation results (probability
values) and a distribution graph.
1. Select a distribution type.
(Distribution selection
screen)
2. Input parameters.
(Parameter input screen)
3. Perform the calculation.
(Graph screen)
Operation Example:
Determine the cumulative probability of a success count of two or less for a binomial
distribution where the number of trials is five with a probability of 0.5.
In the Distribution mode, select Binomial and then input the following parameters.
x: 2 (Data value)
Numtrial: 5 (Number of trials)
p: 0.5 (Probability of success)
Next, change data value
x to 4, and then re-calculate the cumulative probability.
1. From the Main Menu, enter the Distribution mode.
This displays the distribution selection screen.
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