Repeatability
Likelihood of getting the same result when measuring the SAME thing twice
Best way to count rays on fish
Use a microscope
Use a fine probe to feel the bumps at the base of the fin
Paired t-test
Compares repeated measurements
ANOVA
Like a t-test but for multiple groups
Percent difference =
(measurement 1 - measurement 2)/(average of measurements 1 and 2)