Under what circumstances can a very small treatment effect still be significant? A)If the sample size (n) is very large B)If the sample standard deviation (?) is very large C)If the standard error of M (? _M) is very large D)All of the other factors are likely to produce a significant result.

Question

Quizplus · Accepted Answer

A very small treatment effect can still be significant if the sample size is very large. A large sample size reduces the standard error, making it easier to detect a statistically significant difference, even if the effect size is small.

Under What Circumstances Can a Very Small Treatment Effect Still