Practice Distinguishing Between Accuracy And Precision (11.1.2) - Chapter 11: Measurement and Data Processing

Practice: Distinguishing Between Accuracy and Precision

Lesson 11.1.2Measurement and Data Processing

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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 one sentence.
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Think about real-life situations where you measure something.
Question 2.
What is precision?
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Consider multiple attempts at the same measurement.
3Question 3.
What does accuracy refer to?
- Closeness to a true value
- Reproducibility of measurements
- Average of multiple measurements
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Think about how precision differs from accuracy.
4Question 4.
True or False: A measurement can be precise but not accurate.
- True
- False
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Use the dartboard analogy to think through this.
Question 5.
A laboratory uses a balance that consistently reads 2 grams heavier than the actual mass. If they weigh a sample of 20 grams, describe the effects on accuracy and precision.
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Consider how systematic errors impact the readings.
Question 6.
During an experiment, a student takes measurements that are very close to each other but far from the actual concentration of a solution. Suggest improvements to increase accuracy.
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Identify sources of potential systematic error and how to correct them.

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