what is the distribution of sample mean? why do they call it sampling distribution of sample mean why is it called sample mean why do they call it sampling distribution of the sample mean why do you call it sampling distribution why is it called sampling distribution of the sample mean why is it called the sampling distribution? why do they call it a sampling distribution of the sample mean? why is sampling distribution of sample mean called the sampling distribution why is the sample mean a sampling distribution of the sample means? why is sample means called distribution why is sample mean called sampling distribution of the sample mean? what is the difference between sample distribution and sampling distribution why is sample mean called _______ why is it called sampling distribution why do they call it the sampling distribution of the sample mean? why do they call it sampling distribution of the sample mean why do they call _______ a sampling distribution of mean? why do they call the sample mean sampling distribution why is sample mean called sampling