Answer: R-squared (R2)

In Databricks AutoML, the default metric for evaluating regression models is R-squared (R2). This metric quantifies the proportion of variance in the dependent variable that's predictable from the independent variables, with values ranging from 0 to 1. Higher values indicate a model that explains a greater proportion of the variance. Other metrics listed, while useful, are not the default for regression model evaluation in AutoML.

Author: LeetQuiz Editorial Team