The red bounds are based on the Central Limit Theorem. Except for extreme cases of the Bernoulli, when N>50 about 99% of the sample means (i.e., dots) should fall within the bounds.
The red bounds are based on the Central Limit Theorem. Except for extreme cases of the Bernoulli, when N>50 about 99% of the sample means (i.e., dots) should fall within the bounds.