26. Indicate for the following variables which you think would be a better measure of central tendency, the mean, the median, or mode, and justify your choice: 27. 28.

(a) Annual incomes of licensed practical nurses in the Southeast.

(b) Diagnoses of patients seen in the emergency department of a large city hospital.

(c) Weights of high-school male basketball players.

Refer to Exercise 2.3.11. Compute the mean, median, variance, standard deviation, first quartile, third quartile, and interquartile range. Construct a boxplot of the data. Are the mode, median, and mean equal? If not, explain why. Discuss the data in terms of variability. Compare the IQR with the range. What does the comparison tell you about the variability of the observations?