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Contingency Table


Contingency Table:
A contingency table is a way of summarising the relationship between variables, each of which can take only a small number of values . It is a table of frequencies classified according to the values of the variables in question.

When a population is classified according to two variables it is said to have been 'cross-classified' or subjected to a two-way classification . Higher classifications are also possible.



A crucial problem of multivariate statistics is finding (direct-)dependence structure underlying the variables contained in high dimensional contingency tables. If some of the conditional independences are revealed, then even the storage of the data can be done in a smarter way).

In order to do this one can use information theory concepts, which gain the information only from the distribution of probability, which can be expressed easily from the contingency table by the relative frequencies.


Spanish ~ Español - tabla de contingencia




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