How to Find the Equation of a Regression Line and Interpret Regression Lines
TL;DR: A regression line is the best-fit straight line through paired data, written as \(\hat{y} = a + bx\). The slope \(b\) measures predicted change in \(y\) per unit increase in \(x\); the intercept \(a\) is the predicted \(y\) when \(x = 0\). Key takeaways: Regression line equation: \(\hat{y} = a + bx\), where \(\hat{y}\) […]