Scatterplot in an (x, y) regression setup needs to be interpreted regarding location/spread of the marginal distributions, the correlation in the joint distribution, and the corresponding regression slope. Data are drawn randomly from a suitable data-generating process so that each multiple-choice item is either about correct or clearly wrong.
Random numbers, text blocks, and graphics
Verbatim R input/output:
library("exams") set.seed(1090) exams2html("scatterplot.Rnw") set.seed(1090) exams2pdf("scatterplot.Rnw") set.seed(1090) exams2html("scatterplot.Rmd") set.seed(1090) exams2pdf("scatterplot.Rmd")