Showing posts with label ESPN. Show all posts
Showing posts with label ESPN. Show all posts

Monday, December 13, 2010

Accuracy of Hollinger Ratings, Simple Ratings System and Win-Loss in Playoff Series

Totals from 2004-2005 through 2009-2010

Higher Playoff Seed: 56-19
Simple Ratings System(http://www.basketball-reference.com/) : 57-18
Hollinger Rankings Total: 51-24
Hollinger's Formula =  Rating= (((Sos-0.5)/0.037) *0.67)+(((Sos L10-0.5)/0.037)*.33) + 100 + (0.67*(Marg+ (((Road-Home)*3.5) / (games))))+ (.33(Margin L10+(((Road 10- Home 10)*3.5)/10))))

Why is Hollinger's Ratings Flawed?

First, let me say that these results are not statistically significant. While I have proven statistical significance that determines SRS is a better statistical model than win-loss (albeit slightly, but any formula that can outperform win-loss is impressive) by going back to the 1950 playoffs, I have only done Hollinger ratings from 2004-2005 until now, and this sample is not large enough to be statistically significant.

That said, there is a trend emerging...