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


Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.

We review more than 200 websites and blogs to collect the best articles on tools, tips, and techniques that help you to improve your spreadsheets. Each article here is just a snippet - click on the title to open the full article.

Numer of Connexion articles: 227

Excel named range - How to define and use names in Excel

Excel named range - How to define and use names in Excel

17 July 2017

This tutorial explains what an Excel name is and shows how to define a name for a cell, range, constant or formula. You will also learn how to edit, filter and delete defined names in Excel.

Topics include:

  • Excel name - the basics.
  • How to name a range in Excel.
  • How to create a named constant.
  • How to make a named formula.
  • How to name columns and rows (create names from selection).
  • How to create a dynamic named range in Excel.
  • Excel name rules.
  • Scope of Excel names.
  • Excel Name Manager.
  • Top 5 benefits of using names in Excel.
  • Excel named range - tips and tricks.
Excel and modeling governance: What can we do better?

Excel and modeling governance: What can we do better?

11 July 2017

Looking around, a few things are apparent:

  • Everyone is still using Excel.
  • Spreadsheets still contain errors.
  • Graduates still don't have the requisite spreadsheet skills upon entering the workforce.
  • Companies still aren't regularly enforcing good model governance.

This article (see page 7) looks at how we can address the issues and make spreadsheets more user-friendly and faster to use, less prone to error and more capable of completing the tasks required of them.

Excel chart secondary axis alternatives

Excel chart secondary axis alternatives

7 July 2017

Sometimes a secondary axis is a necessary evil. After all, most of the time you can't plot big numbers and little numbers in the same chart without the little numbers getting lost in the scale.

With a few simple changes, we're able to present our readers with a chart that's quick and easy to read. Let's be honest, anything less would be a waste of their time and yours.

7 ways to use Excel REPT function

7 ways to use Excel REPT function

1 July 2017

When is the last time you used the REPT function in Excel? REPT is one of Excel's little-known, overlooked and underutilized functions, yet it is very useful.

Here are 7 ways you can start using the REPT function:

  • Add leading zeros.
  • Create inline charts.
  • Replace nested IF.
  • Create a mirror chart.
  • Create stem and leaf plots.
  • Extract N words from a text string.
  • Create a star rating system.
Do you have to use Dim to declare variables?

Do you have to use Dim to declare variables?

28 June 2017

When looking at other people's VBA code in books or on the internet we often see the Dim statement being used to declare variables.

It is possible to write valid VBA code without declaring variables, so why bother?

This blog discusses the advantages and disadvantages of declaring variables in VBA.

Use IFERROR with VLOOKUP to get rid of #N/A errors

Use IFERROR with VLOOKUP to get rid of #N/A errors

26 June 2017

When using the VLOOKUP formula in Excel, sometimes you may end up with the ugly #N/A error. This happens when your formula can not find the lookup value.

In this tutorial, I will show you different ways to use IFERROR with VLOOKUP to handle these #N/A errors cropping up in your worksheet.

Using the combination of IFERROR with VLOOKUP allows you to show something meaningful in place of the #N/A error (or any other error for that matter).

6 alternatives to nested IF function

6 alternatives to nested IF function

17 June 2017

The IF function is one of the most used functions in Excel. In my opinion, it is the foundation of all programming and Excel's formulae mastery.

However, it is also one of the most misused functions, especially nested IF. Especially now with Excel 2007 and beyond, you can nest up to 64 IF functions to form complex, slow and hard-to-understand IF THEN ELSE statement.

You don't need to slow or complicate your worksheet anymore, this article describes 6 alternatives to using nested IF functions.

PivotTables just got personal

PivotTables just got personal

13 June 2017

A recent update to Excel allows you to set the default PivotTable layout.

Now, when you're building complex reports or performing one-off analyses, you can quickly get started with your favorite PivotTable layout. This feature is available for Excel 2016 on Windows as part of an Office 365 subscription.

The performance of OLAP PivotTables has also been improved.

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