Estimators for contingency tables and their properties and assumptions.
Values of the odds ratio range from zero to infinity. Values further from 1 in either direction represent a stronger association. The inverse value of an odds ratio represents the same degree of association in opposite directions.
The odds-ratio does not change value when the orientation of a contingency table is reversed so that rows become columns and columns become rows. Therefore it is useful in situations where both variables are random.
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