Below is the quadratic regression model for table 1. You can use the parameters to create the quadratic regression equation. You can use the statistics to make conjectures.
3
Expression 4: "y" Subscript, 1 , Baseline tilde "a" "x" squared plus "b" "x" Subscript, 1 , Baseline plus "c"y1~ax21+bx1+c
4
To make predictions, zoom in or out to see the graph. Then click+hold on the equation and drag your mouse to make a prediction.