The Table Below Shows Quarterly Sales Data Over Four Years

Multiple Choice

The table below shows quarterly sales data over four years.A regression of sales on quarters yields this equation: Sales = 18.25 + 1.55 × Quarter number.Using the regression estimate as the base,what is the seasonal index for the fourth quarter? (Pick the answer that is closest to the correct number.)

A) 1.10
B) 1.23
C) 1.04
D) 0.81