7. (10 points) a. Use the Herfindahl-Hirschman Index (HHI) and calculate the competitiveness of each Tennis Grand slam (Australian Open, Roland Garros, Wimbledon, US Open) between 2009 and 2019. Which Grand Slam is the most competitive? Champions: Australian Year Open 2009 Rafael Nadal 2010 Federer 2011 Novak Djokovic 2012 Djokovic 2013 Djokovic 2014 Stan Wawrinka 2015 Djokovic 2016 Djokovic 2017 Federer 2018 Federer 2019 Djokovic Roland Garros Roger Federer Nadal Nadal Nadal Nadal Nadal Wawrinka Djokovic Nadal Nadal Nadal Wimbledon US Open Federer Nadal Djokovic Federer Murray Djokovic Djokovic Murray Federer Djokovic Djokovic Juan Martin Del Potro Nadal Djokovic Andy Murray Nadal Marin Čilić Djokovic Wawrinka Nadal Djokovic Nadal/nb. Calculate the HHI for Formula 1 Drivers and Constructor Championships over the same period. Year Driver Champion Constructor Champion 2009 Jenson Button Brawn GP Red Bull Racing (RBR) RBR RBR RBR 2010 Sebastian Vettel 2011 Vettel 2012 Vettel 2013 Vettel 2014 Lewis Hamilton 2015 Hamilton 2016 Nico Rosberg 2017 Hamilton 2018 Hamilton 2019 Hamilton Mercedes Mercedes Mercedes Mercedes Mercedes Mercedes c. Over this past Decade, there were lots of complaints in regard to the dominant eras in Formula 1. Mercedes has captured the Championship over the last 7 years and RBR won the previous 4. Meanwhile the driver who won the championship also drove for the constructor's champion. You just calculated the HHIs for both Formula 1 and Tennis Grand Slams, how does the dominance compare between the two sports? Why don't we hear more complaints about the dominance of certain tennis players while we often hear complaints about formula 1 drivers being so dominant? (4 arguments; Might want to do a little bit of research on each sports [tennis vs motorsport])

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