Your spreadsheets may be disasters in the making.
Caulkins, Morrison, & Weidemann (2006)
Every study that has looked for errors has found them... in considerable abundance.
Panko & Halverson (1996)
It is now widely accepted that errors in spreadsheets are both common and potentially dangerous.
Nixon & O'Hara (2010)
Research on spreadsheet errors is substantial, compelling, and unanimous.
Panko (2015)
94% of the 88 spreadsheets audited in 7 studies have contained errors.
Panko (2008)
Spreadsheets are alarmingly error-prone to write.
Paine (2001)
The results given by spreadsheets are often just wrong.
Sajaniemi (1998)
Untested spreadsheets are riddled with errors.
Miller (2005)
Despite being staggeringly error prone, spreadsheets are a highly flexible programming environment.
Abreu, et al (2015)
The software that end users are creating... is riddled with errors.
Burnett & Myers (2014)
Spreadsheets contain errors at an alarmingly high rate.
Abraham, et al (2005)
Programmers exhibit unwarranted confidence in the correctness of their spreadsheets.
Krishna, et al (2001)
Spreadsheet errors have resulted in huge financial losses.
Abraham & Erwig (2007)
Studies have shown that there is a high incidence of errors in spreadsheets.
Csernoch & Biro (2013)
Developing an error-free spreadsheet has been a problem since the beginning of end-user computing.
Mireault (2015)
Spreadsheets... pose a greater threat to your business than almost anything you can imagine.
Howard (2005)
Spreadsheet shortcomings can significantly hamper an organization's business operation.
Reschenhofer & Matthes (2015)
People tend to believe their spreadsheets are more accurate than they really are.
Caulkins, Morrison, & Weidemann (2006)
Spreadsheets are often hard, if not impossible, to understand.
Mireault & Gresham (2015)
60% of large companies feel 'Spreadsheet Hell' describes their reliance on spreadsheets.
Murphy (2007)
Overconfidence is one of the most substantial causes of spreadsheet errors.
Sakal, et al (2015)
Errors in spreadsheets are as ubiquitous as spreadsheets themselves.
Colbenz (2005)
The untested spreadsheet is as dangerous and untrustworthy as an untested program.
Price (2006)
Spreadsheets are commonly used and commonly flawed.
Caulkins, Morrison, & Weidemann (2008)
Spreadsheets are dangerous to their authors and others.
Durusau & Hunting (2015)
Spreadsheet errors are still the rule rather than the exception.
Nixon & O'Hara (2010)
Spreadsheets are notoriously error-prone.
Cunha, et al (2011)
Despite overwhelming and unanimous evidence... companies have continued to ignore spreadsheet error risks.
Panko (2014)
Spreadsheets are extraordinarily and unacceptably prone to error.
Dunn (2010)
Even obvious, elementary errors in very simple, clearly documented spreadsheets are... difficult to find.
Galletta, et al (1993)
...few incidents of spreadsheet errors are made public and these are usually not revealed by choice.
Kruck & Sheetz (2001)
1% of all formulas in operational spreadsheets are in error.
Powell, Baker, & Lawson (2009)
A lot of decisions are being made on the basis of some bad numbers.
Ross (1996)
Most large spreadsheets have dozens or even hundreds of errors.
Panko & Ordway (2005)
Spreadsheets have a notoriously high number of faults.
Rust, et al (2006)
Spreadsheets are easy to use and very hard to check.
Chen & Chan (2000)
A significant proportion of spreadsheets have severe quality problems.
Ayalew (2007)
The quality and reliability of spreadsheets is known to be poor.
Bishop & McDaid (2007)
Spreadsheets are the most popular live programming environments, but they are also notoriously fault-prone.
Hermans & van der Storm (2015)
Errors in spreadsheets... result in incorrect decisions being made and significant losses incurred.
Beaman, et al (2005)
The issue is not whether there is an error but how many errors there are and how serious they are.
Panko (2007)
Spreadsheet development must embrace extensive testing in order to be taken seriously as a profession.
Bock (2016)
Never assume a spreadsheet is right, even your own.
Raffensperger (2001)
Spreadsheet errors... a great, often unrecognised, risk to corporate decision making & financial integrity.
Chadwick (2002)
Every study, without exception, has found error rates much higher than organizations would wish to tolerate.
Panko (1999)
Spreadsheets are more fault-prone than other software.
Kulesz & Ostberg (2013)
Most executives do not really check or verify the accuracy or validity of [their] spreadsheets...
Teo & Tan (1999)
Spreadsheets can be viewed as a highly flexible programming environment for end users.
Abreu, et al (2015)
It is irrational to expect large error-free spreadsheets.
Panko (2013)
Spreadsheet errors are pervasive, stubborn, ubiquitous and complex.
Irons (2003)

Resources

 Resources available on this website include:

  • Connexion, a collection of the most useful and interesting spreadsheet-related articles from the web.
  • Bibliography of the literature about spreadsheet best practice, errors, and testing.
  • Our blog about spreadsheet tips, techniques, best practice, and testing.
  • Methodology for testing spreadsheets to find and correct errors.
  • FAQ about this website.
  • Links to other websites about spreadsheets.
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