Statistics of Errors in the Code

by Nataliia Vasylyna | June 3, 2011 12:30 pm

According to western experts, the programmer makes a mistake on average once at five lines of code (including erratum). Approximately 90% of these errors is corrected by the programmer, the rest are detected by subsequent software testing.

Accordingly, the transition from one error in 500 lines to one error on the 2000 lines and above is performed by software testers. The average American program has an error every 2,100 lines of code.

As the statistics show conduct of functional testing by an independent test agency reduces the number of software bugs from 3 to 30 times.

QATestLab provides the services of independent testing and QA services.

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Endnotes:
  1. Definitions and Meaning: Error, Fault, Failure and Defect: https://blog.qatestlab.com/2011/12/06/definitions-and-meaning-error-fault-failure-and-defect/
  2. Black Box Test Techniques. Random Testing: https://blog.qatestlab.com/2011/09/19/black-box-test-techniques-random-testing/
  3. Assessing Bug Priority and Severity: https://blog.qatestlab.com/2011/07/03/assessing-bug-priority-and-severity/
  4. Do you consider yourself an expert in testing?: https://blog.qatestlab.com/2011/04/29/do-you-consider-yourself-an-expert-in-testing/
  5. Analysis of Dynamics of Critical Defects: https://blog.qatestlab.com/2011/04/06/analysis-of-the-dynamics-of-critical-defects/

Source URL: https://blog.qatestlab.com/2011/06/03/statistics-of-errors-in-the-code/