Problem 1::
Consider the data on the Polio cases before the Salk Vaccine.
a) Find the mean and the median of the number of polio cases. Do the work by hand and then use MINITAB to confirm your answer.
b) Take another look at this dataset. Do you think the mean, the median, both or neither are useful numbers to understand this dataset? Explain in your own words.
Problem 2::
In the WRinc dataset, find the mean and the standard deviation of the incomes of employees who have a job rating of 7. Do the work by hand and with MINITAB.