I have three datasets, let's call them X and Y1 and Y2. A scatterplot is produced out of them, with Y1 and Y2 sharing them same X dataset.
My question: if the two regression lines are different in both slope and intercept, is there a way to evaluate if the X dataset has more influence on Y1 or Y2?
Based on the image below, this is to say - which Y dataset is more influenced by the X dataset?
Is there any metrics for measuring this?
Blue slope (Y1): -112
Red slope (Y2): -90