Robert D. Slater

Only a quarter of survey participants were satisfied with their spreadsheet testing. Their techniques are largely manual and lack formalism.

Do you document your spreadsheets? We use the FizzBuzz word game to illustrate the importance of documenting your spreadsheets.

Good spreadsheets are essential for informing decision making. But most spreadsheets are not good. We help you make better spreadsheets.

A poorly documented spreadsheet erodes effective use. Our workshops help students develop good documentation habits and skills.

Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.

Solver Max provides a collection of optimization model examples in Excel (using the Solver and OpenSolver add-ins) and Python.

"Oh My God" my formulas are not working! This article covers most of the reasons for Excel formulas not working. And how to fix them.

Errors in the data, formulas, or manipulation of spreadsheets could be costly, even devastating.