The Table Below Shows Quarterly Sales Data Over Four Years

question 7

Multiple Choice

The table below shows quarterly sales data over four years.A regression of sales on quarters yields the equation: Sales = 18.25 + 1.55 * Quarter number.Using the regression estimate as the base, what is the seasonal index for the 4^th quarter (pick the answer that is closest to the correct number) ?

• A)1.10
• B)1.23
• C)1.04
• D)0.81

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