1. Medical researchers at UCLA administered a new experimental drug for arthritis to 15 subjects. They

recorded the following number of minutes elapsed before the drug showed anyeffect:

81 59 5 70 54 79 67 38 46 66 75 55 63 38 47

a. Make a stem and leaf plot of these data and interpret.

1. Compute the mean and the range
2. Give the five-number summary for this distribution and Construct modified boxplot and interpret
3. (make sure to use 1.5xIQR criterion to spot suspected outliers)

d. Based on the shape of this distribution, would you be willing to report the mean and standard deviation as helpful descriptive measures for the number of minutes elapsed before the drug showed any effect? Please justify your answer.