Here's an example S-N curve created in Excel:
Add a trendline to your scatter plot to create the S-N curve. s-n curve excel
If Excel gives: log(S) = m × log(N) + c Then: (m is negative, typically −0.05 to −0.15 for metals) Here's an example S-N curve created in Excel:
Do not use a Line Chart. Line charts treat the X-axis as categories, not continuous numbers. not continuous numbers.