... (di-D)21 73 69 4 0,34027 2 50 54 -4 55,0 069 4 3 83 82 1 5,84027 4 78 67 11 57,5 069 4 5 56 60 -4 55,0 069 4 6 74 73 1 5,84027 7 74 75 -1 19,5 069 4 8 87 78 9 31,17 361 9 69 64 5 2,5 069 4 10 ... 7 28.0% 6 24.0% 12 48.0% 26 42 .6% 21 34.4% 14 23.0% 26 41.3% 19 30.2% 18 28 .6% 27 60 .0% 7 15 .6% 11 24.4%2 33.3% 3 50.0% 1 16. 7%88 44.0% 56 28.0% 56 28.0%Tu 1 den 5Tu 6 den 20Tu 21 den ... 31,17 361 9 69 64 5 2,5 069 4 10 72 72 0 11 ,67 361 11 77 70 7 12,84028 12 75 63 12 73 ,67 361 Tổng 41 330,9 167 0 Trung bình D=3,4 167 Sd=5,4848 Như vậy D=3,4 167 , Sd=5,4848, t(11;0,025)=2,201 ...