Suspiciously High R^2
Good afternoon, I fitted a LMM with fixed effects being strain, concentration, their interaction, experimental day (insufficient days to account it as random) and random effects being replicate nested within 96-well plate and plate nested within day. I ran a LMM using the standard least square platform and attributing the attribute 'random' to my random effects. I am getting an R^2 of 0.99 which...