What if ISU had not beat Weber?

[SeaGrizluvr]

It's easier to just have fun with stuff now that we won and got the tourney at home. I certainly wouldn't be posting this question had we lost last night(I'd be in bed, under my sheets depressed ) It's better than a thread about the weather!

 

[EverettGriz]

What's interesting is that had the Griz not lost the stunner late in last year's season to Eastern, RPI would have been used last year to determine the champion as well, and UM would have hosted over UNC. It pays to play a difficult schedule and get some wins.

 

[TrueGriz]

So you mean there is only 1 "official" RPI.

No, I meant the formula. there is only one formula to calculate the RPI. If each site used the formula to calculate the RPI right, the RPI rankings should be relatively close. Some include more recent games so the rankings will be slightlty different. But, it seems from site to site there is quite a difference in some sites. This indicates maybe they aren't using correct data.

RPI is basically calculated by calculating winning percentages. you have the teams winning percentage, the teams opponents winning percentage, and then the opponents opponents winning percentage. the teams winning percentage accounts for 25% of the RPI and opponents opponents winning percentage account for 25% of the RPI, and opponents winning percentage accounts for 50% of the RPI.
now to calculate the winning percentage you have to the winning percentage divided by total games (that is obvious). But a win is not necessary equal to 1. a home win is equal to .6 and a home loss is worth 1.4. a road win is worth 1.4 and a road loss is worth .6. a neutral court win or loss are equal to 1.

So now you all can figure out the RPI of each team. But you will need a computer to do it. You will need the schedule of every game and determine which games are neutral (which this causes a few problems on some rpi sites rankings).


As for the official RPI? That, of course, would be the NCAA. they post its rankings once a week at http://www.ncaa.com" onclick="window.open(this.href);return false;. There is always a possibility it could have errors in it. NCAA uses the RPI mainly to break up ties in seeding anyway. There are far more important criteria to seeding than the RPI. SOS is more important then the RPI ranking. A teams out of conference record is more important then conference games. In conference, teams play each other twice. Weber State and Montana split so, really, the RPI for each team really hasn't improved much. their records are 0.6 wins and 0.6 losses.

 

[becker2117]

So you mean there is only 1 "official" RPI.

No, I meant the formula. there is only one formula to calculate the RPI. If each site used the formula to calculate the RPI right, the RPI rankings should be relatively close. Some include more recent games so the rankings will be slightlty different. But, it seems from site to site there is quite a difference in some sites. This indicates maybe they aren't using correct data.

RPI is basically calculated by calculating winning percentages. you have the teams winning percentage, the teams opponents winning percentage, and then the opponents opponents winning percentage. the teams winning percentage accounts for 25% of the RPI and opponents opponents winning percentage account for 25% of the RPI, and opponents winning percentage accounts for 50% of the RPI.
now to calculate the winning percentage you have to the winning percentage divided by total games (that is obvious). But a win is not necessary equal to 1. a home win is equal to .6 and a home loss is worth 1.4. a road win is worth 1.4 and a road loss is worth .6. a neutral court win or loss are equal to 1.

So now you all can figure out the RPI of each team. But you will need a computer to do it. You will need the schedule of every game and determine which games are neutral (which this causes a few problems on some rpi sites rankings).


As for the official RPI? That, of course, would be the NCAA. they post its rankings once a week at http://www.ncaa.com" onclick="window.open(this.href);return false;. There is always a possibility it could have errors in it. NCAA uses the RPI mainly to break up ties in seeding anyway. There are far more important criteria to seeding than the RPI.

thats it? i thoguht it would have been complicated haha! great info bud