Return in-sample linear stats and scaling.
linScore(varName, xcol, ycol, weights, numberOfHiddenDegrees = 0)
name of variable
numeric vector of inputs (no NA/NULL/NaN)
numeric vector of outcomes (no NA/NULL/NaN)
numeric vector of data weights (no NA/NULL/NaN, all>0.0)
optional scalar >= 0 number of additional modeling degrees of freedom to account for.
significance estiamte and scaling.