John Melrose

"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.

Overconfidence is one of the main causes of spreadsheet errors. Being informed about overconfidence leads to more accurate spreadsheets.

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

This article walks you through different methods and built-in tools that can be used to audit and debug Excel spreadsheets.

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

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.

Spreadsheet audit and review procedures are an essential part of almost all City of London financial transactions.