Richard Brath

Research concludes unanimously that spreadsheet errors are both common and non-trivial. We must seek ways to reduce spreadsheet errors.

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

"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.

Our spreadsheet methodology has criteria for designing, building, and validating spreadsheets to ensure that they work correctly.

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

Creating a slow spreadsheet is easy. Creating an efficient spreadsheet requires more thought and application of specific techniques.

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

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