How do you check homoschedasicity?

Homoscedasticity can be checked through a variety of statistical tests. A popular test for detecting homoscedasticity is the Breusch-Pagan Test. This test looks for differences in the variance of the residuals across the regression model. If the variance is the same across all values, then the model has homoscedasticity. Another popular test is the Goldfeld-Quandt Test, which tests for differences in the residuals across groups, then checking if these differences are significant after normalizing the groups by their mean. These tests can help indicate whether homoscedasticity exists in the regression model.