> Insufficient training data causes variance, not bias Key point. If one were to compare the two high-interest groups, a small sample for one group would be r

> Insufficient training data causes variance, not bias Key point. If one were to compare the two high-interest groups, a small sample for one group would be reflected in a large confidence interval around its mean, a greater overlap in the CIs of both group means, and less confidence that a real difference exists.