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Dr. S.KARTHIGAI SELVI
DEPARTMENT OF COMPUTER SCIENCE
THE GANDHIGRAM RURAL INSTITUTE-DTBU
GANDHIGRAM
Statistical quality assurance implies
the following steps
1. Information about software errors and defects is collected
and categorized.
2. An attempt is made to trace each error and defect to its
underlying cause (e.g., non-conformance to specifications,
design error, violation of standards, poor communication
with the customer).
3. Using the Pareto principle (80 percent of the defects can
be traced to 20 percent of all possible causes), isolate the
20 percent (the vital few).
4. Once the vital few causes have been identified, move to
correct the problems that have caused the errors and
defects
A Software may encountered more defects and uncovered
errors
โ€ขIncomplete or erroneous specifications (IES)
โ€ข Misinterpretation of customer communication
(MCC)
โ€ข Intentional deviation from specifications (IDS)
โ€ข Violation of programming standards (VPS)
โ€ข Error in data representation (EDR)
โ€ข Inconsistent component interface (ICI)
โ€ข Error in design logic (EDL)
โ€ข Incomplete or erroneous testing (IET)
โ€ข Inaccurate or incomplete documentation (IID)
โ€ข Error in programming language translation of
design (PLT)
โ€ข Ambiguous or inconsistent human/computer
interface (HCI)
โ€ข Miscellaneous (MIS)
Statistical quality assurance techniques for software have been shown to
provide substantial quality improvement [Art97]. In some cases, software
organizations have achieved a 50 percent reduction per year in defects after
applying these
techniques
Six Sigma is the most widely used strategy for statistical
quality assurance in industry today. Originally
popularized by Motorola in the 1980s.
Six Sigma strategy โ€œis a rigorous and disciplined
methodology that uses data and statistical analysis to
measure and improve a companyโ€™s operational
performance by identifying and eliminating defectsโ€™ in
manufacturing and service-related processesโ€
Statistical Software Quality Assurance.pptx
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Statistical Software Quality Assurance.pptx

  • 1. Dr. S.KARTHIGAI SELVI DEPARTMENT OF COMPUTER SCIENCE THE GANDHIGRAM RURAL INSTITUTE-DTBU GANDHIGRAM
  • 2. Statistical quality assurance implies the following steps 1. Information about software errors and defects is collected and categorized. 2. An attempt is made to trace each error and defect to its underlying cause (e.g., non-conformance to specifications, design error, violation of standards, poor communication with the customer). 3. Using the Pareto principle (80 percent of the defects can be traced to 20 percent of all possible causes), isolate the 20 percent (the vital few). 4. Once the vital few causes have been identified, move to correct the problems that have caused the errors and defects
  • 3. A Software may encountered more defects and uncovered errors โ€ขIncomplete or erroneous specifications (IES) โ€ข Misinterpretation of customer communication (MCC) โ€ข Intentional deviation from specifications (IDS) โ€ข Violation of programming standards (VPS) โ€ข Error in data representation (EDR) โ€ข Inconsistent component interface (ICI) โ€ข Error in design logic (EDL) โ€ข Incomplete or erroneous testing (IET) โ€ข Inaccurate or incomplete documentation (IID) โ€ข Error in programming language translation of design (PLT) โ€ข Ambiguous or inconsistent human/computer interface (HCI) โ€ข Miscellaneous (MIS)
  • 4. Statistical quality assurance techniques for software have been shown to provide substantial quality improvement [Art97]. In some cases, software organizations have achieved a 50 percent reduction per year in defects after applying these techniques
  • 5. Six Sigma is the most widely used strategy for statistical quality assurance in industry today. Originally popularized by Motorola in the 1980s. Six Sigma strategy โ€œis a rigorous and disciplined methodology that uses data and statistical analysis to measure and improve a companyโ€™s operational performance by identifying and eliminating defectsโ€™ in manufacturing and service-related processesโ€
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