A forecaster used the regression equationQt = a + bt + c1D1 + c2D2 + c3D3and quarterly sales data for 1996 I - 2013 IV (t = 1, ..., 64) for an appliance manufacturer to obtain the results shown below. Q is quarterly sales, and D1, D2 and D3 are dummy variables for quarters I, II, and III.
At the 5 percent level of significance, is there a statistically significant trend in sales?
A. Yes, because 2.14 > 2.00.
B. No, because 1.5 < 2.00.
C. No, because 2.14 < 2.66.
D. No, because 1.5 < 2.66.
E. none of the above
Answer: A
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