Only a quarter of survey participants were satisfied with their spreadsheet testing. Their techniques are largely manual and lack formalism.
Errors in the data, formulas, or manipulation of spreadsheets could be costly, even devastating.
Research concludes unanimously that spreadsheet errors are both common and non-trivial. We must seek ways to reduce spreadsheet errors.
See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.
This early spreadsheet, a Babylonian clay tablet c.1800 BC, contains several errors. How many errors do your spreadsheets have?
Solver Max provides a collection of optimization model examples in Excel (using the Solver and OpenSolver add-ins) and Python.
Overconfidence is one of the main causes of spreadsheet errors. Being informed about overconfidence leads to more accurate spreadsheets.
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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