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## 5.18.3. Line Regression |

Icon:

Function: LineEst

Property window:

Short description:

Compute a linear regression, row-by-row.

Long Description:

Compute a linear regression by row, when each column corresponds to an equal interval of time. When working with time series, this is often a very useful transformation as it allows to compute the trend overtime at a row level.

Typically, we compute: trend at 3,6,12 and 24 months. The LineEst note output consists of two variables: Beta 0 and Beta 1. Those variables are also useful inputs of segmentation, much easier to deal with than original purchase history.