# Find e^-m from Poisson Distribution Table

Poisson distribution table & how to use instructions to quickly find the exponent value of m (e^-m) in statistics & probability experiments. The Poisson distribution often related to rare events where the number of trials are indefinitely large and the probability of success is very small. It follows the laws of exponent. Since, users can refer the below Poisson table or calculator to find the value of e-m. Poisson-table to find the exponent value is also available in pdf format too, users may download this table in pdf format to refer it later offline.

Poisson Table (e-m) for Whole Numbers (m = 1 to 10)
m12345678910
e-m0.3678790.1353350.0497870.0183160.0067380.0024790.0009120.0003350.0001230.000045

Poisson Table (e-m) for Decimal Point Numbers (m = 0 to 0.99)
m 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09
0.0  1  0.99  0.9802  0.9704  0.9608  0.9512  0.9418  0.9324  0.9231  0.9139
0.1  0.9048  0.8958  0.8869  0.8781  0.8694  0.8607  0.8521  0.8437  0.8353  0.827
0.2  0.8187  0.8106  0.8025  0.7945  0.7866  0.7788  0.7711  0.7634  0.7558  0.7483
0.3  0.7408  0.7334  0.7261  0.7189  0.7118  0.7047  0.6977  0.6907  0.6839  0.6771
0.4  0.6703  0.6637  0.657  0.6505  0.644  0.6376  0.6313  0.625  0.6188  0.6126

0.5  0.6065  0.6005  0.5945  0.5886  0.5827  0.5769  0.5712  0.5655  0.5599  0.5543
0.6  0.5488  0.5434  0.5379  0.5326  0.5273  0.522  0.5169  0.5117  0.5066  0.5016
0.7  0.4966  0.4916  0.4868  0.4819  0.4771  0.4724  0.4677  0.463  0.4584  0.4538
0.8  0.4493  0.4449  0.4404  0.436  0.4317  0.4274  0.4232  0.419  0.4148  0.4107
0.9  0.4066  0.4025  0.3985  0.3946  0.3906  0.3867  0.3829  0.3791  0.3753  0.3716

## How to Find the Exponent in e-m

Users may use this below Poisson table calculator or refer the rows & columns value of Poisson distribution table to find the exponential value of m where m = np = mean = variance.
by Using Calculator
Supply parameter m value directly to the Poisson table calculator and hit on "LOCATE" to address the corresponding value of exponent of m.

by Using Poisson Distribution Table
Refer the first Poisson table for the exponential power of whole numbers & second table for the exponential power of decimal point numbers. For example, the value of e-3.75 can be obtained by
e-3.75 = e(-3 - 0.75)
= (e-3) (e-0.75)
= (0.4979) (0.4724)
e-3.75 = 0.3508
Refer the Poisson table for (e-3) & (e-0.75).
The product of both table values is the Poisson value for e-3.75.