QUALITY%20CONTROL%20/%20QUALITY%20ASSURANCE - PowerPoint PPT Presentation

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QUALITY%20CONTROL%20/%20QUALITY%20ASSURANCE

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QUALITY CONTROL / QUALITY ASSURANCE Data Assessing data quality Control charts Acceptance limits Evaluation of a control chart Reporting data Measurement uncertainty – PowerPoint PPT presentation

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Title: QUALITY%20CONTROL%20/%20QUALITY%20ASSURANCE


1
QUALITY CONTROL / QUALITY ASSURANCE
  • Data
  • Assessing data quality
  • Control charts
  • Acceptance limits
  • Evaluation of a control chart
  • Reporting data
  • Measurement uncertainty
  • Qualifiers

2
QUALITY CONTROL / QUALITY ASSURANCE
  • Assessing data quality
  • Control charts
  • Shewhart charts as
  • ? Avg.-charts
  • ? recovery rate charts
  • Range control charts
  • Acceptance limits
  • Upper lower control limits
  • Upper lower warning limits
  • Evaluation of a control chart

3
QUALITY CONTROL / QUALITY ASSURANCE
  • Control charts
  • Avg. charts range control samples
  • pure standard solutions
  • synthetic samples
  • reference samples
  • certified reference material
  • Recovery Rate Samples
  • spiked natural samples / matrix influences

4
QUALITY CONTROL / QUALITY ASSURANCE
  • Control charts
  • Avg. charts equations
  • CV standard deviation 100
  • mean (avg.)
  • Bias measured x - known x 100
  • known value
  • Recovery rate samples
  • RR (actual increase of x) 100
  • (expected increase)
  • (xspiked xunspiked) 100
  • ( ?x expected)
  • RR (Xact) 100
  • Xexp

5
QUALITY CONTROL / QUALITY ASSURANCE
  • Control charts
  • Range control charts
  • Ri largest value smallest value of a
    subgroup I
  • _ consisting of n single
    measurements
  • R ? Ri
  • N

6
QUALITY CONTROL / QUALITY ASSURANCE
  • Control charts
  • Shewhart charts as
  • ? Avg.- charts
  • ? Recovery rate charts
  • Range control charts

7
QUALITY CONTROL / QUALITY ASSURANCE
  • Reporting data
  • Measurement uncertainty
  • Qualifiers
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