For the same bivariate table, Cramer's V is .27 and lambda is zero. What can we conclude?
A) a computational mistake has been made. V can never be greater than lambda
B) this is a negative relationship
C) there is no association, disregard V
D) the variables may be associated even if lambda is zero. Disregard lambda if the row marginals are very unequal

Question

Quizplus · Accepted Answer

Cramer's V and lambda are both measures of association between two categorical variables, but they have different interpretations and strengths. While lambda measures the strength of association based solely on the number of concordant and discordant pairs of observations, Cramer's V takes into account the number of observations and the size of the table to provide a standardized measure of the effect size. Therefore, even if lambda is equal to zero, there may still be a non-zero value of Cramer's V indicating an association between the variables. In this case, a value of .27 suggests a moderate effect size. However, if the row marginals are very unequal, lambda may underestimate the strength of association and should be disregarded.

For the Same Bivariate Table, Cramer's V Is