When calculating the squared point-biserial correlation... Question 7 options: you can use the t-obtained from your hypothesis test. you can use the t-critical from your hypothesis test. you should use the pooled variance estimate, if the assumption of homogeneity of variances was met it is critical to check the results of your F-max test to see if the coefficient of determination is interpretable you should use the individual variance estimates, if the assumption of homogeneity of variances was met