Hi guys, I am doing a statistics paper on whether second serve winning percentages have an effect on the number of match wins. I will be taking data from the 2013 year. I will be doing regression analysis and chi-squares tests. For, chi squared test of independence, the null hypothesis is the second serve winning percentage is independent of match wins. My categories are good average and low second serve winning percentage. So what do experts consider a good second serve percentage and what would be a bad second serve percentage?
http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data
http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data