After opening XLSTAT, select the XLSTAT / Modeling data / Nonparametric regression command, or click on the corresponding button of the Modeling Data toolbar (see below). SPC for Excel contains four nonparametric methods. Regression discontinuity (RD) analysis is a rigorous nonexperimental1 approach that can be used to estimate program impacts in situations in which candidates are selected for treatment based on whether their value for a numeric rating exceeds a designated threshold or cut-point. The authors emphasize choosing the appropriate statistical test through conceptual material, assumptions, homework exercises, and a helpful 'choose-the-appropriate-test' flowchart. A Kruskal-Wallis test is like an Analysis of Variance (ANOVA). It allows you to examine what independent variables (x) impact a response variable (y) and by how much. Nonparametric regression excel Instead of estimating parameters like m and c in y = mx +c, a nonparametric regression focuses on the fitted curve.
