Question: Consider the following 20 observations, representing quarterly information for 5 years. a. Calculate the 4-quarter centered moving average. b. Calculate the ratio-to-moving average. c. Calculate

Consider the following 20 observations, representing quarterly information for 5 years.

a. Calculate the 4-quarter centered moving average.
b. Calculate the ratio-to-moving average.
c. Calculate and interpret the seasonal indices for quarters 1 and 4.

Year Quarter 1 Quarter 2 Quarter 3 Quarter 4 8.37 10.03 9.61 8.80 7.46 12.78 12.48 9.65 11.45 10.58 8.84 8.91 15.93 6.79 13.35 15.93 24.81 22.00 10.16 19.77

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