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Consider the Regression Equation y^=18.321+3.762(t)\hat { y } = 18.321 + 3.762 ( t )

question 76

Essay

Consider the regression equation y^=18.321+3.762(t)\hat { y } = 18.321 + 3.762 ( t ) and the data below:  Time Period (t) Sales (y^)122227323431545647745842\begin{array} { | l | l | } \hline \text { Time Period } ( t ) & \text { Sales } ( \hat { y } ) \\\hline 1 & 22 \\\hline 2 & 27 \\\hline 3 & 23 \\\hline 4 & 31 \\\hline 5 & 45 \\\hline 6 & 47 \\\hline 7 & 45 \\\hline 8 & 42 \\\hline\end{array}
-Compute the forecast errors for period 6 and 7.


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