Error in Statistics 1Var Report

[mbeddo]

(01-26-2015 03:58 PM)Tim Wessman Wrote:  I think the app values and calculations are correct and the CAS calculation is the swapped one here - unless I am remembering my stats wrong and all other units I've compared with are wrong too. Anyone better at stats disagree?

Tim, you are correct. I should have known better - I teach statistics, after all. When you ask for the population standard deviation, you assume that you have captured the entire population (in D1, for instance) and therefore know the mean precisely. When you ask for the sample standard deviation, you acknowledge that you only have a sample of the population (in D1, for instance) and therefore do not know the population mean (but you estimate it), so the standard deviation has to be a bit larger than its population value.

Apologies for stirring this up.