Discover what a log-normal distribution is, its financial applications, and how to calculate it, including using Excel for practical financial analysis.

Confidence intervals for the variance of a normal distribution with unknown mean are constructed which improve upon the usual shortest interval based on the sample variance alone. These intervals have ...

This paper obtains and explores a family of confidence procedures for the mean of a normal distribution which are, in a certain sense, more efficient than the usual procedure. Let X (possibly a sample ...