why are variance and standard deviation based on sample mean? how does variance and standard deviation differ why is the variance smaller if the standard deviation is the same as the sample mean? why do the variance and standard deviation differ difference between sample and population variance which of the following is true about sample mean vs. standard deviation why is standard deviation bigger than sample mean which of the following is not true about variance? why is the variance and standard deviation smaller for a sample mean or a sample mean? when using the sample mean to produce a variance and standard deviation the number that would have be used is the why is variance smaller than the variance of the sample or population what would be the variance and standard deviation of a sample mean how do you calculate variance from the population mean? why is a sample mean smaller than the variance? why is the variance of sample mean smaller than the sample mean why does the sample variance differ from the population mean? why is standard deviation larger than sample mean? what is variance variance standard deviation what's the difference between sample mean and standard deviation why is the variance of a sample smaller than the sample mean?