Rank biserial correlation online calculator
Example 1: Calculate the biserial correlation coefficient for the data in columns A and B of Figure 1. Figure 1 – Biserial Correlation Coefficient. The biserial correlation of -.06968 (cell J14) is calculated as shown in column L. Note that the value is a little more negative than the point-biserial correlation (cell E4). Therefore, the point biserial shouldn’t be used to analyze experimental results; use Linear Regression with dummy variables instead. 2. Biserial Correlation. Biserial correlation is almost the same as point biserial correlation, but one of the variables is dichotomous ordinal data and has an underlying continuity. For example, depression