34.6 Looking at Two Variables Together: Correlation and Regression
Point 4 of 7
34.6.4 The Simple Linear Regression Equation
Core idea
Thread the line that hugs the dot cloud best, ŷ = b̂x + â, so the total deviation is as small as possible
Module goal. Move from a single variable to paired data, describe correlation, fit a line, use it to predict, and understand that correlation is not causation
eastmath.com · 34.6 Looking at Two Variables Together: Correlation and Regression · 34.6.4 The Simple Linear Regression Equation