Years ago, no math education was complete without understanding how to compute a square root. Today, you are probably just ...

The ability to round a number to a number of decimal places or to a number of significant figures is essential if answers are to be written to the correct degree of accuracy asked for in a question.

The Gaussian form chosen for the variogram in the "Getting Started" section is based on the consideration of the plots of the sample variogram. For the coal thickness data, the Gaussian form appears ...