316
kk
kk
k Poisson Distribution
You can use the following menu to select from the different types of Poisson
distribution.
•{Ppd}/{Pcd} ... {Poisson probability}/{Poisson cumulative density} calculation
uu
uu
uPoisson probability
Poisson probability calculates a probability at specified value for the discrete Poisson
distribution with the specified mean.
f(x)
=
x!
e
–
x
µ
µ
(x = 0, 1, 2, ···)
µ
:mean (
µ
> 0)
Perform the following key operations from the statistical data list.
5(DIST)
6(g )
1(POISN)
1(Ppd)
The following shows the meaning of each item when data is specified using list
specification.
Data ................ data type
List .................. list whose contents you want to use as sample data
µ
..................... mean (
µ
> 0)
Execute .......... executes a calculation
The following shows the meaning of a parameter data specification item that is
different from list data specification.
x ..................... value
Example To calculate Poisson probability for one list of data
For this example, we will calculate Poisson probability for data
= {2, 3, 4} when
µ
= 6.
1(List)c
1(List1)c
gw
1(CALC)
probability when x = 2
probability when x = 3
probability when x = 4
18 - 8 Distribution
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