Incidence Of Errors In Spreadsheets

Incidence of errors in spreadsheets Designing Financial Models that Work Jose Miguel Dergal

Myth or reality? Every study that has attempted to measure errors has found them and has found them in abundance ,[object Object],[object Object],[object Object],[object Object],Studies % of SS with error Error rate 55% 4.3% 42% 2.5% 42% 2.1% 86% 4.6%

Everybody makes them? Regardless of the level of experience in design or development of spreadsheets, the incidence is above 20% ,[object Object],[object Object],[object Object],[object Object],Studies % of SS with error 58% 30% 35% 24% Source: Janrin & Morrisson (2000); Panko & Sprange (1998)

What about double check? People are not only prone to errors, but also are ineffective detecting them ,[object Object],[object Object],Studies % of SS with error 63% 83% Source: Janrin & Morrisson (2000); Panko & Sprange (1998)

So, which are the most common types? The most common types of errors are Hard-Coding and mistakes referencing cells ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Type of error % of errors found 38% 33% 22% 3% 3% 1%

And the ones that produce mistakes? …but reference cells and logic are the errors that drive to wrong results in most instances ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Type of error % of errors found 11% 49% 32% 5% 3% 1%

Incidence Of Errors In Spreadsheets

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