Hi, For some stats explaining I need an excel sheet that calculates and graphs the normal(Bell)-shaped curve of some data set with a given average and a known stdev. It would be nice to demonstrate the calculation the chance of occurance of some given value in relation to the data set. Does any one have such an examplesheet? or knows how it is easely done? With regards Wim ================================================================= Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =================================================================