How to check linear regression in a lab report
Recalculate the fit, preserve variable definitions and units, inspect residual behavior, and avoid treating R² as proof of validity.
Reconstruct the fitted data
Confirm which x,y pairs, exclusions, transformations, and weights were used. A copied equation without its data selection is not reproducible.
Check coefficients and units
The slope carries y-unit per x-unit and the intercept carries the y-unit. Axis scaling and prefix changes must agree with the reported equation.
Interpret R² carefully
R² describes variance accounted for by the fitted model in the observed data. It does not establish causality, absence of bias, or suitability outside the measured range.
Inspect assumptions
Review residuals, independence, uncertainty, linear range, and experimental design before making a scientific claim from the fit.
Sources and boundaries
Solice develops LabCrux. The independent sources above do not sponsor or endorse the product. This page explains a review method; your experimental evidence, course instructions, and instructor remain authoritative.