Richard J. Irons

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

Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.

We are conscious of very few of our errors. When people are confronted with their actual error rates, they are typically shocked.

The twenty principles for good spreadsheet practice aims to reduce the amount of time wasted and the number of errors.

"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.

Spreadsheet errors are reduced by using good design. Our students do three assignments to acquire good spreadsheet design skills.

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

Every study that has looked for errors has found them in considerable numbers. Spreadsheeting's childhood is over.