Apologise, The original email, > > >>The reason is simple and comprehensive.... > > >> > > >>Assume a population with ANY distribution of > > >>elements. Then randomly select > > >>a number of sample elements from the population to > > >>characterize the > > >>underlying population. That distribution of sample > > >>elements ALWAYS tends > > >>toward a normal [Gaussian] distribution. And the > > >>mean and standard deviation > > >>of the sample distribution are unbiased > > >>representations of the mean and > > >>standard deviation of the underlying population.
was not written by Isobel, it came from W.D. Allen on sci.stat.math which I posted in the summary of my replies. Thankyou both for your help in this matter, I am currently reading Practical Geostatistics 2000 and have ordered the statistics books as recommended by Donald. Regards Digby Millikan B.Eng Geolite Mining Systems U4/16 First Ave., Payneham South SA 5070 Australia. Ph: +61 8 84312974 [EMAIL PROTECTED] http://www.users.on.net/digbym -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
