Linear regression fits a straight line through your data to find the best-fit value of the slope and intercept.
Finding the best-fit slope and intercept
Interpolating from a linear standard curve
Advice: When to fit a line with nonlinear regression
r2, a measure of goodness-of-fit of linear regression
Is the slope significantly different than zero?
Comparing slopes and intercepts
Runs test following linear regression
Analysis checklist: Linear regression
Graphing tips: Linear regression
