Moderator: SoftMaker Team
PlanMaker uses the normal distribution in the confidence function. We will check if we switch to the t-distribution when we review the extended and improved functions in Excel2010. (Thanks for the hint )
However, I wouldn't overestimate the effect, for reasonable sample sizes the results are not so different, this is also stated in the article. The complaint was about a sample size of 6, which is imho not enough to do serious statistics.
jimjutte wrote:Hello Werner,
I'm not suggesting that people use PM over SAS or other stats software, but to collect data is quite easy in PM and especially new students who are looking for a small office package that is inexpensive, they will rely on this... Better to know that it is not the right tool, than for a student to be under the impression that they have the right tool... yet get the wrong answers.
jimjutte wrote:Hi Lance,
Not sure if you meant to respond to me, but I'll comment anyway. It is certainly not infrequent that people use and abuse statistics at their peril, but regardless, if one starts with incorrect numbers, one has a lower probability (pun intended) of arriving a correct answer vice starting with correct numbers. Further, if one is already using the correct numbers there is a good chance that the might actually know what they are doing and the limitations of their study.
Users browsing this forum: No registered users and 1 guest