What measures of central tendency and spread are the most appropriate to use with the following sets of data? A) Salaries of 125 physicians in a clinic B) Number of tender joints in 30 joints evaluated on a standard examination for disease activity in rheumatoid arthritis patients C) Presence of diarrhea in a group of infants D) The disease stages for a group of patients with Reye's syndrome (six stages, ranging from 0 = alert wakefulness to 5 = unarousable, flaccid, areflexia, pupils unresponsive) E) The age at onset of breast cancer in females