2. You are given the following dataset, from an experiment investigating the effect of keyboard type (variable X, four types) on student typing performance (Y is the number of errors made in typing up a document), each keyboard type was tested on 5 different students (between-subjects design). Yi1 Yi2 Yi3 Yi4 Yi5 X = 1 14 13 14 14 11 X = 2 13 12 10 14 12 X = 3 13 20 18 16 20 X = 4 17 19 18 16 18 THIS IS THE DATASET