29. Consider the following data on types of health complaint

(J joint swelling, F fatigue, B back pain, M muscle weakness, C coughing, N nose running/

irritation, O other) made by tree planters. Obtain frequencies and relative frequencies for the various categories, and draw a histogram. (The data is consistent with percentages given in the article “Physiological Effects of Work Stress and Pesticide Exposure in Tree Planting by British Columbia Silviculture Workers,” Ergonomics, 1993: 951–961.)

O O N J C F B B F O J O O M O F F O O N O N J F J B O C J O J J F N O B M O J M O B O F J O O B N C O O O M B F J O F N