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2 cards from this section. Quick, good the night before a test.
Define Quality Assurance.
Think about why maintaining quality is essential in environmental analysis.
What is precision in measurements?
How often can you get the same reading repeatedly?
What does QA/QC stand for?
Focus on the purpose of maintaining standards.
True or False: Precision refers to how accurate a measurement is.
Reflect on the definitions of both terms.
A measurement system has a mean error of 5% with a standard deviation of 2%. If a pollutant's regulatory limit is 100 units, calculate the error range.
Consider how mean and standard deviation work together for calculations.
You are performing an environmental test with a confidence level of 90%. If your result is X = 50 and the limit is 60, assess if it's compliant based on the error margin of 10.
Think about how error ranges play into compliance.
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