What is another word for regression line?
Pronunciation: [ɹɪɡɹˈɛʃən lˈa͡ɪn] (IPA) 
The regression line is a statistical tool used to estimate the relationship between two variables. There are several synonyms for this term, including trendline, line of best fit, and regression curve. The trendline is often used in Excel to describe the regression line for a data set. The line of best fit is another popular synonym for regression line and is used to illustrate the relationship between two variables on a scatter plot. The regression curve is a more general term that can describe any curve that is fitted to a data set. Overall, these synonyms all refer to the same tool and are used interchangeably in statistics and data analysis.
