How to determine linear correlation between two variables in chem analysis | ANALYTICAL CHEMISTRY

In this tutorial, learn how to compute Pearson’s correlation coefficient (r) using the summation form, applied to real spectrophotometry absorbance data. We’ll compare results, discuss rounding effects, and explain why precision matters in analytical chemistry. Perfect for students, educators, and researchers who want a clear, step‑by‑step guide to correlation analysis in chemical data interpretation.