You can make a line graph in Excel in a matter of seconds using data already entered into the spreadsheet.

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 ...

Trend lines are a type of regression analysis, which is a way to study the relationships between variables. In the context of small business, trend lines are often used to show sales trends and can be ...

I have a set of data, which I charted and then used the 'add trendline' tool to get a decent 2nd order poly. fit with the equation: y = -3E-39x^2 + 4E-19x + 3.4212 However, when I type this equation ...