Accuracy vs. Precision in Measurement
Explore the concepts of accuracy and precision in scientific measurements through various examples and questions.
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Accuracy vs. Precision in Measurement
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Read each question carefully and provide your best answer based on your understanding of accuracy and precision in scientific measurements.
1. Which term describes how close a measurement is to the true or accepted value?
Precision
Accuracy
Reliability
Validity
2. A student measures the length of a rod three times, getting 15.2 cm, 15.3 cm, and 15.2 cm. The actual length of the rod is 18.0 cm. Which of the following statements is true?
The measurements are both accurate and precise.
The measurements are precise but not accurate.
The measurements are accurate but not precise.
The measurements are neither accurate nor precise.
1. High precision always implies high accuracy.
True
False
2. Random errors primarily affect the precision of a measurement.
True
False
1. refers to the closeness of two or more measurements to each other.
2. Systematic errors typically affect the of a measurement.
1. Explain the difference between accuracy and precision using an example from a sport like archery or darts.
2. Describe a scenario in a chemistry lab where a student might achieve precise but inaccurate results. What could be the cause?