Practice Accuracy Vs Precision (8.2) - Environmental Sampling - Environmental Quality Monitoring & Analysis,

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define accuracy in your own words.
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Think of how close you can hit a target.
Question 2.
What does precision refer to?
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Consider how consistent your results are.
3Question 3.
What defines accuracy in measurements?
- Consistency of measurements
- Closeness to the true value
- Average of repeated measures
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Think about hitting a bullseye.
4Question 4.
True or False: Precision measures the consistency of measurements.
- True
- False
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Consider if you shot arrows at the same target repeatedly.
Question 5.
You measure a sample three times and get the following results: 20.1, 20.2, and 19.9 mg/L. Analyze these results for precision and accuracy compared to the true value of 20 mg/L.
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Calculate the mean and compare.
Question 6.
Design an experiment that assesses the accuracy and precision of a specific instrument of your choice (like a pH meter). Include steps for calibration and testing.
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Ensure proper standardization for reliable comparisons.

5 more questions in this section. Enroll free to practise them all.