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

Spreadsheet bibliography

Title Reducing spreadsheet users' overconfidence through business oriented university courses
Authors Marton Sakal, Lazar Rakovic, Predrag Matkovic, Pere Tumbas, & Veselin Pavlicevic
Year 2015
Type Proceedings
Publication 7th International Conference on Education and New Learning Technologies (EDULEARN 2015)
Series 6-8 July, pages 6054-6059
Abstract

Empirical researches suggest that errors inevitably accompany spreadsheets, which are nowadays one of most ubiquitous business tools, used to overcome the gaps between functionalities of existing, systematically developed, information systems and new, ad hoc requirements that these systems are faced with.

Spreadsheets are most commonly developed by end users who are not IT experts. End user overconfidence acts as a strong catalyst for spreadsheet errors. Previous studies revealed that end user overconfidence is inversely proportional to users' level of awareness of different types of spreadsheet errors and possibilities of their occurrence.

With reference to results of a study on errors present in spreadsheets used in Serbian SMEs on one hand, and content of spreadsheet related courses within Serbian business oriented universities on the other, this paper emphasizes that not enough attention (if any) was devoted to raising awareness on the potential risks of spreadsheet errors at spreadsheet related university courses.

The paper proposes taxonomy of errors that could be studied as a standard segment of aforementioned courses.

Full version Available
Sample
Average assessment of frequency of certain types of errors
Average assessment of frequency of certain types of errors
People tend to be overconfident about the correctness of their own spreadsheets. Respondents perceive their spreadsheets as more accurate, that is, believe that other people's spreadsheets contain more errors of each kind.
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