We have the following data points:
$(73, 7.2)$, $(68, 7.1)$, $(46, 6.4)$, $(25, 5.4)$, $(73, 7)$
We calculate the means:
$\bar{x} = \frac{73+68+46+25+73}{5} = 57$
$\bar{y} = \frac{7.2+7.1+6.4+5.4+7}{5} = 6.62$
We calculate the sums of squares and
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