offset Include an Offset in a Model FormulaAn offset is a term to be added to a linear predictor, such as in a generalised linear model, with known coefficient 1 rather than an estimated coefficient.
offset(object)
object | An offset to be included in a model frame |
There can be more than one offset in a model formula, but - is not supported for offset terms (and is equivalent to +).
The input value.
For examples see glm and Insurance in package MASS.
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