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Managerial Decision Making - Statistics Problem 1999

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The enrollment in the College of Business at Midwestern University by quarter since 1999 is:

Quarter
Year Winter Spring Summer Fall
1999 2,033 1,871 714 2,318
2000 2,174 2,069 840 2,413
2001 2,370 2,254 927 2,704
2002 2,625 2,478 1,136 3,001
2003 2,803 2,668 ? ?

Using the ratio-to-moving-average method:
a. Determine the four quarterly indexes.
b. Interpret the quarterly pattern of enrollment. Does the seasonal variation surprise you?
c. Compute the trend equation, and forecast the 2004 enrollment by quarter.

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The enrollment in the College of Business at Midwestern University by quarter since 1999.

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