What is the value coefficient of determination? What does this value indicate about the association between variation in education (X) and variation in hours spent on a screen (Y)?

Problem Set #3 Information about an association between two interval-ratio variables is presented below. The association is between "the hours of screen time per day" (Y) and "years of schooling" (X). A measure of the overall association is given as well as the specific components of the OLS model. The OLS model estimates the effect of education (X) on the hours of screen time per day (Y). Association between X and Y Estimate r -0.229 OLS Model Components Estimate Constant (a) 5.575 Education Slope (b) -0.196