What is conference rpi

The "central mean" gives the most weight to the middle team s in the group and progressively less weight to teams as you go away from the middle in either direction, up or down. This tends to smooth out the effect of anomalous teams that are rated much higher and lower than the middle team s in the group. The "simple average" "arithmetic mean" weights each team equally no matter where they are relative to the middle. It is 50 percent of the RPI.

Factor III is the team's opponents' opponents' Division I winning percentage, or the team's opponents' strength of schedule, excluding results against the team in question. The first was based on the team's non-conference schedule using the normal RPI ranking of the team's opponents.

Numbers are restricted to encourage interchanges under the Chatham House Rule. The mix of attendees typically reflects the diversity of RPU members and supporters in government, business, the professions, and academia. Our two annual conferences are the Westminster Conference , a one day conference of particular interest to policy makers, regulators, and the regulated industries, held each spring, and our Competition and Regulation Policy Conference held in Oxford over two days in September, and including the Zeeman Lecture and our Distinguished Fellows Dinner.

Within the chart, I add a computer generated trend-line straight line that shows the relationship between conference average rating and conference performance percentage. These two numbers represent the general fairness of the ARPI in relation to conferences.

The Trend Spread for all games is This measures the extent that the ARPI discriminates among conferences in relation to conference strength. The following table shows the average Adjusted Non-Conference RPIs of the conferences' teams in relation to their performance percentages. The conferences are arranged in order from the conference with the highest average UNCRPI to the conference with the lowest:.

The following chart, based on the table, shows the relationship between conferences' average ANCRPIs and conferences' performance in relation to those averages:. Based on this chart, the Trend Spread for all games is Comparing the results for these two systems, for all games The following table shows this:.

In evaluating how significant the differences are, for the Overall columns, a difference of 0. For the Top 60 columns, a difference of 0. So far as rating systems go, these differences in rates of correlation between ratings and game results are large and indicate the NCRPI is inadequate for rating individual teams.

Given that the NCAA's rationale for using the ANCRPI is that it "better evaluates the strength of each conference," how much difference does it really make in the ranking of conferences?

For NCAA Tournament purposes, both in terms of at large selections and in terms of seeds, the group of conferences whose teams matter in any year generally is the top 10 at the very most.