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