... Ni 6 ( Xi X )2 11 ,22 5, 52 1, 82 0, 12 0, 42 2, 72 7, 02 Xi - X -3,35 -2, 35 -1,35 -0,35 0,65 1,65 2, 65 ( n xi x Nh vy: i = ) Ni( Xi X )2 11 ,22 16,56 10, 92 0, 72 2,94 13,6 21 ,06 = 77, 02 77, 02 30 = 1,6 ... Xi -X -2, 48 -1,48 ( Xi X )2 6,15 2, 19 Ni( Xi X )2 18,45 10,95 10 8 -0,48 0, 52 1, 52 1. 52 3, 52 0 ,23 0 ,27 2, 31 6,35 12, 39 1,84 2, 16 9 ,24 12, 7 12, 39 =...
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15/12/2015, 10:48