OBJECTIVES
A DQA has many objectives. The first is immediate. You need to determine whether a decision or estimate can be made with the desired level of certainty, given the quality of the data. The remaining objectives look toward future efforts:
- Were the response variables appropriate? Should additional data (potentially confounding factors) have been recorded?
- Were the measuring devices adequate?
- Are the recorded values all within predefined limits?
- How well did the sampling design perform?
- If the same sampling design strategy were used again in a similar study, would the data support the same intended use with the desired level of certainty?
- Were sufficient samples taken (after correcting for missing data) to detect an effect of practical significance if one were present?
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