Photo Equipment Store Earnings
The quarterly earnings of a chain of Photo Equipment stores have been recorded for the years 2011-2014.These data (in millions of dollars)are shown in the accompanying table.
$\begin{array}{l}\text { Year }\\\begin{array} { | c | c c c c | } \hline \text { Quarter } & 2011 & 2012 & 2013 & 2014 \\\hline 1 & 65 & 70 & 73 & 79 \\2 & 80 & 88 & 90 & 95 \\3 & 98 & 103 & 107 & 111 \\4 & 67 & 74 & 76 & 80 \\\hline\end{array}\end{array}$
-Regression analysis with t = 1 to 80 was used to develop the following forecast equation: $\tilde { y } _ { t }$ = 250 + 7.8t + 1.4Q₁ - 1.7Q₂ -1.4Q₃,where $Q _ { i } = \left\{ \begin{array} { l } 1 \text { if quarter } i \quad ( i = 1,2,3 ) \\0 \text { otherwise }\end{array} \right.$ Forecast the next four values.

Question

Photo Equipment Store Earnings
The quarterly earnings of a chain of Photo Equipment stores have been recorded for the years 2011-2014.These data (in millions of dollars)are shown in the accompanying table.

\begin{array}{l}\text { Year }\\\begin{array} { | c | c c c c | } \hline \text { Quarter } & 2011 & 2012 & 2013 & 2014 \\\hline 1 & 65 & 70 & 73 & 79 \\2 & 80 & 88 & 90 & 95 \\3 & 98 & 103 & 107 & 111 \\4 & 67 & 74 & 76 & 80 \\\hline\end{array}\end{array}

-Regression analysis with t = 1 to 80 was used to develop the following forecast equation:

\tilde { y } _ { t }

= 250 + 7.8t + 1.4Q₁ - 1.7Q₂ -1.4Q₃,where

Q _ { i } = \left\{ \begin{array} { l } 1 \text { if quarter } i \quad ( i = 1,2,3 ) \\0 \text { otherwise }\end{array} \right.

Forecast the next four values.

Quizplus · Accepted Answer

The Answer of Photo Equipment Store Earnings The quarterly earnings of a chain of Photo Equipment stores have been recorded for the years 2011-2014.These data (in millions of dollars)are shown in the accompanying table. $$\begin{array}{l} \text { Year }\ \begin{array} { | c | c c c c | } \hline \text { Quarter } & 2011 & 2012 & 2013 & 2014 \ \hline 1 & 65 & 70 & 73 & 79 \ 2 & 80 & 88 & 90 & 95 \ 3 & 98 & 103 & 107 & 111 \ 4 & 67 & 74 & 76 & 80 \ \hline \end{array} \end{array}$$ -Regression analysis with t = 1 to 80 was used to develop the following forecast equation: $\tilde { y } _ { t }$ = 250 + 7.8t + 1.4Q₁ - 1.7Q₂ -1.4Q₃,where $Q _ { i } = \left\{ \begin{array} { l } 1 \text { if quarter } i \quad ( i = 1,2,3 ) \ 0 \text { otherwise } \end{array} \right.$ Forecast the next four values.

Photo Equipment Store Earnings the Quarterly Earnings of a Chain

Photo Equipment Store Earnings
the Quarterly Earnings of a Chain