effectus tells you which minority of causes provokes which majority of effects.
You provide it with a series of numbers. It tells you whether a pareto distribution is present.
Mean, Median and Most likely value regularly hide that a minority of causes provokes a majority of effects.
The Fallacy of the Arithmetic Mean explains the situation in-depth.
First, install it:
$ pip3 install effectus
Then, in your Python shell do:
from effectus import Effects Effects([789, 621, 109, 65, 45, 30, 27, 15, 12, 9]) <pareto present [0.707]: 1/5 causes => 4/5 effects [total ∆: 2.3 %]>
If you want 80% of results, you need only 20% of causes.
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