26. Consider the following data on type of health complaint

(Jjoint swelling,Ffatigue,Bback pain, Mmuscle weakness,Ccoughing,Nnose running/

irritation,Oother) 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 ofWork 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 MO J M O B O F J O O B N C O O O M B F J O F N