... 16. 5 1.5 17 16 18 23 21 13 14 165 16. 5 16. 5 16. 5 16. 5 16. 5 16. 5 16. 5 16. 5 165 0.5 −8.5 −0.5 1.5 6. 5 4.5 −3.5 −2.5 17 16. 5 0.5 6 G H I J 8 2 10 Total 55 55 55 134 100 STATISTICAL TESTS × 10 (100 ... THE TESTS 127 Sample B 69 . 76, 67 .88, 68 .28, 68 .48, 70.15, 71.25, 69 .94, (+) (−) (−) (−) (+) (+) (+) 71.82, 71.27, 69 .70, 68 .89, 69 .24, 69 . 86, 68 .35, (+) (+) (+) (−) (−) (+) (−) 67 .61 , 67 .64 , 68 . 06, ... 69 . 86, 68 .35, 67 .61 , 67 .64 , 68 . 06, 68 .72, 69 .37, 68 .18, 69 .35, 69 .72, 70. 46, 70.94, 69 . 26, 70.20 ¯ ¯ n = 26, xi = 1804.38, x = 69 .40, (xi − x )2 = 34. 169 xi+1 xi = 125 242. 565 , • r1 = xi+1 xi...