Design matrix used for the fit (after dropping missing rows).
Row indices (of the input) dropped for missing values.
Number of estimated (non-aliased) coefficients including the constant.
Externally studentized (deleted-t) residuals.
Minitab's unusual observations: R = large standardized residual (|r| > 2), X = high leverage (h > 3p/n).
Predict at new rows (arrays of predictor values in names order, without the constant).
Optionaloptions: { confidence?: number }
Coefficient covariance matrix (p × p, in coefficient order).