Question

+8 10 11 12 13 F 14 15 - 16 - 17 Do left-handed people have better analytical skills than right-handed people? Many nineteenth-century psychologists, extrapolating from discoveries made regarding brain lateralization, believed that they do. Some psychologists have recently uncovered an article that describes a study of chess players. The study reported such things as handedness and chess rating for the players. (A chess rating is a number from 100 to about 3000, with a higher number indicating greater expertise.) The data for the 50 left-handed players studied are summarized in the following histogram: Frequency wil 15 14 10 7 5. 4 300 700 1900 2300 2700 1100 1500 Chess rating Based on the histogram, draw the ogive (the cumulative relative frequency polygon) for the sample data. Cumulative relative frequency LOO 1.00 1 OB

Answer 1

solution: frequency Cumulative frequery class 4 4 800-700 11 7 701 - 1100 25 14 1101 - 1500 39 14 اک9) 1900 t 46 4900 - 2300 50 4 2301 2700 507A OD 45 40 68 Bovenbaly Egiver 35 30 25 20 15 10 5 300 - 700 Qan 1500 X 1900 2300 2700