Question: Guinea pig survival times Here are the survival times in days of 72 guinea pigs after they were injected with infectious bacteria in a medical experiment. Survival times, whether of machines under stress or cancer patients after treatment, usually have distributions that are skewed to the right.
(a) Make a histogram of the data and describe its main features. Does it show the expected right skew?
(b) Now make a boxplot of the data. Be sure to check for outliers.
(c) Which measure of center and spread would you use to summarize the distribution-the mean and standard deviation or the median and IQR? Justify your answer.