This tutorial explains how to find a line that best fits a curve in Excel, including several examples.
How to add best fit line/curve and formula in Excel?
Curve-fitting data in Excel is easier than you think!
Demystifying Inferential Statistics: Unlocking Insights from Data
Excel Tutorial on Advanced Graphing and Curve Fitting
How to Perform Fisher's Exact Test in Excel - Statology
How to fit non-linear equations in excel using solver
Excel Curve Fitting & Linearization, Part 2 - Planet Analog
Curve Fitting in Excel - EngineerExcel
Correlation Coefficients: Positive, Negative, and Zero