If one wanted to assess the magnitude of the relationship between a continuous variable and a dichotomous variable, one would calculate a
A) point-biserial correlation.
B) Spearman rho.
C) phi coefficient.
D) Spearman-Brown coefficient.

Question

Quizplus · Accepted Answer

The point-biserial correlation is the most appropriate statistic for assessing the relationship between a continuous variable and a dichotomous variable. This correlation coefficient is used when one of the variables is dichotomous and the other is continuous. The point-biserial correlation measures the relationship between these two variables by comparing the means of the continuous variable among the two groups defined by the dichotomous variable. It ranges from -1 to 1, where a value of 1 indicates a perfect positive relationship, 0 indicates no relationship, and -1 indicates a perfect negative relationship. Therefore, the point-biserial correlation is the best choice in this scenario.

If One Wanted to Assess the Magnitude of the Relationship