Essay
In order to calculate the regression you need the TSS and either the SSR or the ESS . The TSS is fairly straightforward to calculate, being just the variation of Y . However, if you had to calculate the SSR or ESS by hand (or in a spreadsheet), you would need all fitted values from the regression function and their deviations from the sample mean, or the residuals. Can you think of a quicker way to calculate the ESS simply using terms you have already used to calculate the slope coefficient?
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The ESS is given by 11ec79c3_3966_6c70_9...View Answer
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