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fix typo (#899)

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Ulrik Lyngs 2021-02-08 18:30:06 +01:00 committed by GitHub
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model-basics.Rmd
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@ -338,7 +338,7 @@ The way that R adds the intercept to the model is just by having a column that i
model_matrix(df, y ~ x1 - 1)
```
The model matrix grows in an unsurprising way when you add more variables to the the model:
The model matrix grows in an unsurprising way when you add more variables to the model:
```{r}
model_matrix(df, y ~ x1 + x2)