Overtime
the Quarterly Overtime Hours (In 1000s)recorded in a Large

Essay

Overtime
The quarterly overtime hours (in 1000s)recorded in a large steel mill are shown below. $$\begin{array} { | c | c | c | } \hline \text { Year } & \text { Quarter } & \text { Overtime Hours } \\\hline 1995 & 1 & 32 \\& 2 & 15 \\& 3 & 21 \\& 4 & 28 \\1996 & 1 & 35 \\& 2 & 16 \\& 3 & 27 \\& 4 & 29 \\1997 & 1 & 36 \\& 2 & 21 \\& 3 & 25 \\& 4 & 37 \\1998 & 1 & 41 \\& 2 & 29 \\& 3 & 31 \\& 4 & 40 \\\hline\end{array}$$ Using the regression technique,the linear trend line $\hat{y}$ = 21.675 + .854t was computed.
-What do the seasonal indexes tell us?