 | This page is a primary topic and an article needs to be written about it. One or more editors believe it holds the title of a broad-concept article. The article may be written here or drafted elsewhere and then moved. Related titles should be described here, while unrelated titles should be moved to Line fitting (disambiguation).(May 2019) |  |
Line fitting is the process of constructing a straight line that has the best fit to a series of data points.
Several methods exist, considering:
- Vertical distance: Simple linear regression
- Resistance to outliers: Robust simple linear regression
- Perpendicular distance: Orthogonal regression (this is not scale-invariant i.e. changing the measurement units leads to a different line.)
- Weighted geometric distance: Deming regression
- Scale invariant approach: Major axis regression This allows for measurement error in both variables, and gives an equivalent equation if the measurement units are altered.
