I just read this in an addiction paper
"The mean total amount of methamphetamine consumed over this 30-day period among those
who used any was 0.21 g (SD=0.30) per using day"
Because the SD is greater than the mean, can I assume that the distribution was positively skewed?
What is the total variance accounted for in a Hierarchical model?
Is the total variance accounted for the maxium F Change result?
EG: In total, x1 and x2 accounted for 38.1% of the variance in y. R2 =0.38, F(2,997) =.323.39, p<.001
or is the total variance treated like a normal multiple...