(xx m- x )4142 *m 3 µ x = * = == ii 6,2304 i = 82,84 =0,1246 1 m 3 m 50i 50i 1.33 (µ3) : - 80.5 81.5 81.5 82.5 82.5 83.5 83.5 84.5 84.5 85.5 , / 7 13 15 11 4