Alliance Selection Strategy

[themccannman]

OPR has been within 90% accurate at all of the last 5 events we attended (6 once nationals rolls around) so if you don't have a quantitative scouting system to track every team OPR is your best bet.

[Gregor]

Don't count out rookies, they can surprise you.

[Joe Ross]

Originally Posted by themccannman

OPR has been within 90% accurate at all of the last 5 events we attended (6 once nationals rolls around) so if you don't have a quantitative scouting system to track every team OPR is your best bet.

What data did you use to determine it was 90% accurate?

[KrazyCarl92]

Originally Posted by Joe Ross

What data did you use to determine it was 90% accurate?

I have the same gripe. It sounds like they have found a correlation coefficient of 0.9 between the explanatory variable (OPR) and the dependent variable (Avg. Score). In this case it is poor interpretation to say that this is 90% accurate. However, due to an R^2 value of 0.81, it would be acceptable to say that 81% of the variation in Avg. Score can be explained by variation in OPR. Saying it is 90% accurate based on a correlation coefficient of 0.9 is poor analysis of a statistical regression (it sounds like this is the mathematical tool being used).