Regression splines (parametric Smoothing splines (nonparametric The continuous piecewise linear model 25 male 0.20 0.15 0 .05 C.00 -0.05 20 25 age Patrick Breheny STA 621:Nonparametric StatisticsIntroduction Regression splines (parametric) Smoothing splines (nonparametric) The continuous piecewise linear model age spnbmd −0.05 0.00 0.05 0.10 0.15 0.20 10 15 20 25 female 10 15 20 25 male Patrick Breheny STA 621: Nonparametric Statistics