Refer to the Archives of Pediatrics and Adolescent Medicine (Dec. 2007) study of honey as a remedy for coughing, Exercise. Recall that coughing improvement scores were recorded for children in three groups: the over-the-counter cough medicine dosage (DM) group, the honey dosage group, and the control (no medicine) group. The data are saved in the HONEYCOUGH file.
a. For each group, construct a box plot of the improvement scores.
b. How do the median improvement scores compare for the three groups?
c. How does the variability in improvement scores com-pare for the three groups?
d. Do you detect any outliers in any of the three coughing improvement score distributions?

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