Solution 27230: Performing a Poisson PDF and Poisson CDF on the TI-83 Family, TI-84 Plus Family, and TI-Nspire™ in TI-84 Plus Mode.
How do I use the poissonpdf( or possioncdf( command on a TI-83 family, TI-84 Plus family, or TI-Nspire in TI-84 Plus mode?
The command poissonpdf( computes a probability at x for the discrete Poisson distribution with the specified mean Ã. Please note that à must be any real number that is greater than zero; x may be an integer or a list of integers. The syntax is as follows:
poissonpdf(Ã, x)
The command poissoncdf( computes a cumulative probability at x for the discrete Poisson distribution with a specified mean Ã. Please note that à must be any real number that is greater than zero; x may be any real number or a list of real numbers. The syntax is as follows:
poissoncdf(Ã, x)
Example: Given Ã=6 and x=10 find the probability for the discrete Poisson distribution:
1) Press [2nd] [DISTR].
2) On the TI-84 Plus family or TI-Nspire in TI-84 Plus mode press [ALPHA] [C]. On the TI-83 family press [ALPHA] [B].
3) Press [6] [,] [1] [0] [)] [ENTER].
Given Ã=.126 and x={0,1,2,3} find the probability for the discrete Poisson distribution:
1) Press [2nd] [DISTR].
2) On the TI-84 Plus family or TI-Nspire in TI-84 Plus mode press [ALPHA] [D]. On the TI-83 family press [ALPHA] [C].
3) Press [.] [1] [2] [6] [,]
4) Press [{] [0] [,] [1] [,] [2] [,] [3].
5) Press [}] [)] [ENTER].
Please see the TI-83 Plus Family and TI-84 Plus Family guidebooks for additional information.
TI-Nspire handheld in TI-84 Plus mode users may refer to the TI-84 Plus family guidebook.