16 To validate the analysis, the assumption of bivariate normality should be verified. However, with only eight points, all but severe violations of normality are likely to go undetected. In addition, marginal normality does not guarantee the bivariate normality needed for the techniques above. Methods for assessing bivariate normality directly suffer from the same lack of power problematic in the univariate case. Although the basic conclusions of the analysis are not in doubt, the dataset could be used as motivation for multivariate nonparametric techniques in an advanced course.
Most students have an interest in sports, either as a participant, spectator, or both.
Among collegiate sports, basketball in certainly one of the most popular. Hence, many students are likely to find basketball score data appealing, especially if that data can be used to answer an interesting question about a team with which they are familiar. The file hawks.dat contains the raw data. The file hawks.txt is a documentation file containing a brief description of the dataset. Values are aligned and delimited by blanks.