The following seasonal indexes and trend line were computed from five years of quarterly sales data.
Trend line: ŷt = 325 + 18.5t, t = 1, 2, 3, …20. $$\begin{array} { | c c | }
\hline \text { Quarter } & \text { Seasonal index } \
\hline 1 & 1.35 \
2 & 1.22 \
3 & 0.88 \
4 & 0.55 \
\hline
\end{array}$$ Forecast the sales for the next four quarters.

Question

The following seasonal indexes and trend line were computed from five years of quarterly sales data.
Trend line: ŷt = 325 + 18.5t, t = 1, 2, 3, …20. $$\begin{array} { | c c | } 
\hline \text { Quarter } & \text { Seasonal index } \
\hline 1 & 1.35 \
2 & 1.22 \
3 & 0.88 \
4 & 0.55 \
\hline
\end{array}$$ Forecast the sales for the next four quarters.

Quizplus · Accepted Answer

The Answer of The following seasonal indexes and trend line were computed from five years of quarterly sales data.
Trend line: ŷt = 325 + 18.5t, t = 1, 2, 3, …20. $$\begin{array} { | c c | } 
\hline \text { Quarter } & \text { Seasonal index } \
\hline 1 & 1.35 \
2 & 1.22 \
3 & 0.88 \
4 & 0.55 \
\hline
\end{array}$$ Forecast the sales for the next four quarters.

The Following Seasonal Indexes and Trend Line Were Computed from Five