Quality Control — tools
- Some tools
• 16`b.~Pareto chart • 03`8.Variation measures (03`8.&) • 13`4.^~Standard deviation • 12`4.^~Standard deviation of integers
• Histogram § 09`2.~construction (08`1.~old, 07`a.~&) • Some 05`c.theory • § 08`4.RSM (Response Surface Methodology)
• Quality of (4-legged) 10`b.^~tables • Light 12`4.^~bulbs • 10`b.~Fraction defective (3-D surface)
- Control charts
• $ 00`7.Chart factors d2, 3
- $ At 'Faculdade de Ciências' (Univ. of Lisbon):§ • 03`a.other factors • 02`a.Simulation of factors
• 99`a.X-bar & R charts • §From $raw data
- Acceptance sampling

Inspection by attributes • 01`2.Sample size (105 ¹)

Inspection by variables • 09`8.~Gauss from specs • Z1.9: 07`6.~procedure; 14`8.~decision, via file upload (non-central, noncentral distribution).
• Sample 03`8.size (414¹, approx.) • Gaussian 12`4.^~ladder
• OC curve • 04`bSampling plan (deprecated) • Estimated Lot 99`8.Percent nonconforming, ϖ, (414¹) 'std dev method'
• Estimated Lot (14`4.~) Percent defective (fraction nonconforming), ϖ (414¹) (Compstat 2014, Genève)
• Acceptance sampling (14`4.~) by variables (from Q to k, non-central t) (414¹) (Compstat 2014, Genève)
• Non-central (noncentral) t distribution: 03`a.~curve and k,  04`c.table (with 10`c.^§graph), 06`3.^~convergence to curve, 03`c.~sequence of curves with formulas, 04`4.~moments curves, 01`b.direct, $inverse; $non-c. vs. Student's t;* $risk underlying k • 03`6Acceptability criterion by variables
¹ ex-Mil-Std-105D or ex-Mil-Std-414 or recent equivalent standards:
 ANSI/ASQ Z1.4 (attributes) → ISO 2859, ANSI/ASQ Z1.9 (variables) → ISO 3951

- Bags for σ (sigma) Sums of unequal size samples • 18`1.^~in parallel (CISTI'2018) • 19`6.^~(SPE 2019) Sigma from sums • More bags (cement)


- Exponential • 12`a.~quality index
- Weibull • 16`7.~Distribution • 16`3.~Quality index - Sample loc. statistics • 16`8.~Average, median, total median
- Truncated Gaussian • A quality index, 12`4.^~  Q  
- DOE, Design Of Experiments • 18`b.$ DOE full fact.
- Special topics
• "Inverse Gaussian" (IG) (or Wald): 04`c.~distribution curve, 04`a.approximation; sampling plan; 04`a.^~$ Q index • Distribution of the 04`9.^~$ reciprocal of an IG var.
• 04`1.~§$ Lognormal distr. • ~Gamma function • 04`8.^~Gaussian raised to a power • 06`5.~Average of exponentials • 06`6.~Gamma distr. • Sampling plan for 07`1.~Gaussian, exponential • 06`7.^~Q index
- Monte Carlo simulation (See...)
Q:  quality
 
Convention: ~ An Internet-compatible graph is made ^ By Monte Carlo (simulation) § Under construction $ Non-functional
 
 
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Created: 2009-03-25 — Last modified: 2019-08-24