Primary exercises
In the survey dataset:
The variables
span1andspan2are of the same type representing the span of the writing hand and the non-writing hand respectively. We would like to analyse these values in groups. To do this we need to convert the variablesspan1andspan2into variablesspanandsizewithspanranging over span1 and span2 andsizeover the values ofspan1andspan2variables.Reproduce the following plot: