The Following Trend Line and Seasonal Indexes Were Computed from Four

question 130

Essay

The following trend line and seasonal indexes were computed from four weeks of daily observations. $\hat { y } _ { t }$ = 145 + 1.66t. $$\begin{array} { | l | c | } \hline \text { Day } & S I _ { t } \\\hline \text { Sunday } & 1.403 \\\text { Monday } & 0.517 \\\text { Tuesday } & 0.515 \\\text { Wednesday } & 0.621 \\\text { Thursday } & 0.675 \\\text { Friday } & 1.145 \\\text { Saturday } & 2.124 \\\hline\end{array}$$ Forecast the seven values for the next week.