In addition to basic calculation functions, Excel also provides data analysis tools that allow you to find the R2 of two lines with an Excel formula. R2, or R-squared, is the relationship between two ...

Launch Microsoft Excel. To highlight lines in an existing Excel document, click the "File" tab. Click "Open," browse to the spreadsheet and double-click it. Otherwise, Excel opens a new spreadsheet ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...