Gamma measures the proportional reduction in error when predicting
A)the order of pairs of cases on one variable.
B)the order of pairs of cases on both variables.
C)the order of a pair of cases on one variable with knowledge of the order of the pair on the other variable.
D)none of the above

Question

Quizplus · Accepted Answer

Gamma measures the strength of association between two ordinal variables by comparing the observed concordance and discordance between the pairs of observations to the expected concordance and discordance under the assumption of independence. It measures the proportional reduction in error when predicting the order of a pair of cases on one variable with knowledge of the order of the pair on the other variable. Therefore, option C is the correct choice.

Gamma Measures the Proportional Reduction in Error When Predicting