185 200 - 15 2 160 173 ? 13 3 125 152 - 27 4 133 135 - 2 5 130 123 7 6 135 113 22 7 112 106 6 8 107 100 7 9 105 95 10 10 93 92 1 11 85 89 - 4 12 85 87 - 2 The regression of the line represented by (2) = b X Iogio e =0.1113, and the standard error ? 0.0137 therefore t = 8.12 which is highly significant with 10 degrees of freedom.
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