When all possible samples have been randomly selected from a single population, the standard deviation of the resulting distribution of means is called
A) the "true" standard deviation of the sample's individual scores
B) the "true" standard deviation of the population's individual scores
C) the standard error of the mean
D) sample variance plus error variance

Question

Quizplus · Accepted Answer

The standard deviation of the distribution of means is called the standard error of the mean. It is different from the standard deviation of the population's individual scores or the sample's individual scores since it refers to the variability of sample means, not individual scores. It is also not the sum of sample variance and error variance since it only takes into account the variability of the means.

When All Possible Samples Have Been Randomly Selected from a Single