One weekend's games obviously isn't a large enough statistical sample to draw major conclusions over whether you can rotate your squad without missing a beat.
"To help people like my sisters, there needs to be a large enough sample of people who contribute genomic information so we can draw statistically significant inferences, " says Mr. Wilbanks.
Press Ganey admits that survey sample sizes sometimes are too small and says a minimum of 30 responses for an ER is necessary to draw meaningful conclusions from its data.