9.1 - Statistical Considerations
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Practice Questions
Test your understanding with targeted questions
What is meant by sample volume in environmental analysis?
💡 Hint: Think about the impact of sample size on detection.
Explain the difference between precision and accuracy.
💡 Hint: Consider a bullseye target; consistency versus closeness.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the term for the smallest amount of substance that can be accurately measured?
💡 Hint: Think about what determines whether you can detect a substance at all.
True or False: Precision and accuracy are the same in measurements.
💡 Hint: Visualize a target; are the arrows clustered together or close to the bullseye?
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Challenge Problems
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You are tasked to measure heavy metals in a lake. Your previous measurements indicate low levels, but your detection limit is higher than expected concentrations. What steps could you take to ensure reliable data?
💡 Hint: Think about volume and sensitivity in relation to detection limits.
During a water audit, you collected multiple samples that showed different TSS readings. Discuss how variations could arise and what it means for data analysis.
💡 Hint: Consider factors affecting sample consistency.
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