Eoin Langan

"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.

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

Once information is loaded into a spreadsheet, it acquires properties that it may not deserve – a process called reification.

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

The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.

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.

This early spreadsheet, a Babylonian clay tablet c.1800 BC, contains several errors. How many errors do your spreadsheets have?