310       408       390       477       1,585     2010     243       377       281       433       1,334     2011     268       289       286       480       1,323     2012     305       358

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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U.S. Manufactured General Aviation Shipments, 2009–2015
Year   Qtr 1   Qtr 2   Qtr 3   Qtr 4   Total  
2009     310       408       390       477       1,585    
2010     243       377       281       433       1,334    
2011     268       289       286       480       1,323    
2012     305       358       339       514       1,516    
2013     329       413       353       520       1,615    
2014     345       380       379       527       1,631    
2015     296       374       378       544       1,592    
 

Use MegaStat or Minitab to calculate estimated seasonal indexes and trend.

Q1.   Q2.  Q3.   Q4

In which quarters are shipments highest? Lowest?

 

 

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