Exercise $1 below. Find the median and the mode from our data on rolls of the dice. Write your answers Exercise S2 a. Why is Professor A's median equal to 47 h. Why is Professor B's median equal to 3? C. Also, what are their modes? d. Exercise S3 Which measure of central tendency is "best" in this case, in your opinion? Go back to Professors A and B. Compute the sample variances of their ratings from the data: Rating Number of Students Professor A 3 24 4 26 Professor B 3 26 24