A lab report is a document that outlines the process and results of a scientific experiment. It typically includes sections such as the introduction, methods, results, and discussion. The purpose of a lab report is to communicate findings clearly and allow others to replicate the experiment. In a lab report, the introduction explains the background and objectives of the experiment. The methods section details the procedures followed, while the results section presents data, often in tables or graphs. Finally, the discussion interprets the results, explaining their significance and any potential errors in the experiment.