Choosing what type of bivariate correlation coefficient to use in statistical analysis depends on what type of data variable X and variable Y are. In a study where X is gender and Y is weight, what correlation coefficient might you use?
A)Pearson r
B)Kendall's Tau
C)Point-Biserial
D)Phi

Question

Quizplus · Accepted Answer

Point-Biserial correlation coefficient is the best choice for analysis of this data. X is a true dichotomy variable (there are two possible answers), and Y yields ratio data (numerical values with an absolute zero); this correlation coefficient is indicated when one variable is a true dichotomy and one is either interval or ratio data.

Choosing What Type of Bivariate Correlation Coefficient to Use in Statistical