Khan Academy Static

Regression is fitting a line or curve to a pattern we see in a scatterplot. This tutorial focuses on linear regression, where you'll learn how to fit a line to data, describe features of that line, and use the line to make predictions.

4519_Fitting_a_line_to_data.html

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4520_Estimating_the_line_of_best_fit_exercise.html

4522_Interpreting_a_trend_line.html