Goal of these proceedings is to introduce a method based on event weighting in particle physics experiments.
Weighting means that events are not just counted as integer numbers
but are assigned a weight factor according to their importance
in the analysis. This method has a close connection to the maximum likelihood method known to reach the smallest statistical error.
The purpose of this document is to give a more educational overview on the subject.
As an example the extraction of a beam polarization from
scattered particles is discussed.