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A student study of the effects of caffeine asked volunteers to take a memory test...

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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 15 Who What Where a Describe the W s for these data 5555 O A The two variables are the Scores 15 30 15 HTH b Name the variables and classify each as categorical or quantitative HOH Min 16 15 13 HIH Q and the OB Q1 17 18 15 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 30 25 When How 10 5 Why which are G Median 21 22 18 and O C Scores 30 HIHO o N HOH variables respectively o H Q Q3 23 23 22 Q O D Scores HANNWW HH H NLH du Max 27 27 23

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