We are conscious of very few of our errors. When people are confronted with their actual error rates, they are typically shocked.
See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.
Our spreadsheet methodology has criteria for designing, building, and validating spreadsheets to ensure that they work correctly.
Solver Max provides a collection of optimization model examples in Excel (using the Solver and OpenSolver add-ins) and Python.
The twenty principles for good spreadsheet practice aims to reduce the amount of time wasted and the number of errors.
Only a quarter of survey participants were satisfied with their spreadsheet testing. Their techniques are largely manual and lack formalism.
This early spreadsheet, a Babylonian clay tablet c.1800 BC, contains several errors. How many errors do your spreadsheets have?
The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.
We can help you make better spreadsheets:
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