Correlation of 0.2 is negligible with any sample size. The potential for invalid inferences is only pronounced by a small sample size. A samples size of a thous

Correlation of 0.2 is negligible with any sample size. The potential for invalid inferences is only pronounced by a small sample size. A samples size of a thousand is much better. But with n=100, r=0.2 there is a bigger chance that local factors influence the result than that the observed association says anything about human nature.