Question: (a) Plot the data on airplane shipments. (b) Can you see seasonal patterns? Explain. (c) Use MegaStat or MINITAB to calculate estimated seasonal indexes and

(a) Plot the data on airplane shipments.
(b) Can you see seasonal patterns? Explain.
(c) Use MegaStat or MINITAB to calculate estimated seasonal indexes and trend. Is there a trend in the deseasonalized data?

U.S. Manufactured General Aviation Shipments, 1995-2003 Qtr 2 Qtr 1 208 229 253 481 502 613 568 442 393 Qtr 4 Total 1995 1996 1997 1998 1999 248 284 337 486 611 704 1,077 1,115 1,549 2,200 2,504 2,816 2,632 2,207 2,137 257 230 367 606 685 586 S10 492 315 310 525 602 702 712 673 641 679 2001 2002 2003 576 526

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a b It is difficult to see a seasonal pattern if there is one There has been an increasin... View full answer

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