Definition Weighted regression
A weighted regression is a linear regression in which observations are not treated equally, but different weights are assigned to them.
It is common to use weighted regressions in case of datasets with evident outliers. To ensure that the outliers do not have too strong an influence on the results of the regression, this strategy assigns higher weight observations to ones closer to the average in constrast to observations that are farther away from the mean.
Please note that the definitions in our statistics encyclopedia are simplified explanations of terms. Our goal is to make the definitions accessible for a broad audience; thus it is possible that some definitions do not adhere entirely to scientific standards.
- Weighted regression
- Weighted average