ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
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The Wall Street Journal’s website, www.wsj.com, reported the number of cars and light-duty trucks sold through October of 2014 and October of 2015. The top sixteen manufacturers are listed here. The sales information for all manufacturers can be accessed in a data file below.  Sales data are often reported in this way to compare current sales to last year’s sales.

 

  Year-to-Date Sales  
Manufacturer Through October 2015   Through October 2014  
General Motors Corp. 2,562,840   2,434,707  
Ford Motor Company 2,178,587   2,065,612  
Toyota Motor Sales USA Inc. 2,071,446   1,975,368  
Chrysler 1,814,268   1,687,313  
American Honda Motor Co Inc. 1,320,217   1,281,777  
Nissan North America Inc. 1,238,535   1,166,389  
Hyundai Motor America 638,195   607,539  
Kia Motors America Inc. 526,024   489,711  
Subaru of America Inc. 480,331   418,497  
Volkswagen of America Inc. 294,602  

301,187

 
Mercedes-Benz 301,915   281,728  
BMW of North America Inc. 279,395   267,193  
Mazda Motor of America Inc. 267,158   259,751  
Audi of America Inc. 165,103   146,133  
Mitsubishi Motors N A, Inc. 80,683   64,564  
Volvo 53,803   47,823  
 

Click here for the Excel Data File

Required

a. Using computer software, compare the October 2015 sales to the October 2014 sales for each manufacturer by computing the difference. Make a list of the manufacturers that increased sales compared to 2014; make a list of manufacturers that decreased sales. Which manufacturers are in the top five with increased sales? Which manufacturers are in the bottom five with decreased sales?

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