THESE books are intended for the use of teachers who instruct their classes orally in the processes and rules of arithmetic, and who only require the assistance of graduated sets of exercises. In the ...

The simple definition of a mean is that of a numeric quantity which represents the center of a collection of numbers. Here the trick lies in defining the exact type of numeric collection, as beyond ...

In this article we construct an upper prediction limit for the arithmetic mean of a future sample from a lognormal distribution. First, we present three approximate distributions for the total of the ...