Data Analysis and Statistics E Using back-to-back stem-and-leaf plots to compare data sets V The stem-and-leaf plot below gives the typing speeds of two groups of students. There were 20 students in Group 1 and 19 in Group 2. Use the plot to answer the questions. Typing speed (words per minute) Group 1 Group 2 6631 3 29 855 52100 4 0334 4588 6 6 64 40 5 00058 50 6 0134 (a) Which group had more typing speeds in the 60s? X Group 1 Group 2 Each had the same (b) Which group had the greater median typing speed? O Group 1 Group 2 The medians were the same (c) What were the ranges of typing speeds for the two groups? Group 1 Iwords per minute Group 2 words per minute