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This question 2 point s possible A student study of the effects of caffeine asked volunteers to take a memory test 2 hours after drinking soda Some drank caffeine free some drank regular and others drank a mixture of the two getting a half dose of caffeine The 5 number summaries for each group s scores number of items recalled correctly on the memory test are shown below Complete parts a through d No Caffeine Low Caffeine High Caffeine SERVIC OA Scores 30 n 15 15 HOH HOH 15 HOCH NLH Min 16 15 13 b Name the variables and classify each as categorical or quantitative The two variables are the type of drink c Create side by side boxplots to display these results as best you can with this information Create side by side boxplots where N represents the group with no caffeine L the group with low caffeine and H the group with high caffeine Choose the correct graph below O C Q Q and the test score OB Scores 30 25 Q1 17 18 15 KOCH HOHO N y HO H Q ON Median 21 22 18 Il now 11 viivy which are categorical and quantitative variables respectively Scores HOHox HOH N L d Write a few sentences comparing the performances of the three groups The medians for these two groups were The participants scored about the same with generally scored lower than the other two groups on all measures of the 5 number summary OTH H Q Q Q3 23 23 22 O D Scores annond with slightly more variation in HDH Z HOH HIHI Q Submit test Max 27 27 23 The

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