a. Calculate the four-firm concentration ratios for 2006 and 2011. Analyze the industry changes during this five-year

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a. Calculate the four-firm concentration ratios for 2006 and 2011. Analyze the industry changes during this five-year period.
b. Calculate the eight-firm concentration ratios for 2006 and 2011. Does this index give you any different indication about changes in the industry over the same period?
c. Calculate the Herfindahl-Hirschman Indexes for 2006 and 2011. What information does this index tell you about changes in the industry? How does this information differ from the four-firm and eight-firm indexes?
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Financial Accounting Tools for Business Decision Making

ISBN: 978-0470239803

5th Edition

Authors: Jerry J. Weygandt, Paul D. Kimmel, Donald E. Kieso

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