Question detail
What does it mean if a set of repeated measurements has a small range?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
- A. The measurements are very accurate.
- B. The measurements are very precise.
- C. The measurements have high uncertainty.
- D. The measurements are all incorrect.
Answer
The measurements are very precise.
Explanation
A small range indicates that the measurements are closely grouped together, reflecting high precision in the results.
Common mistake
Confusing Uncertainty with Mistakes
Students often confuse measurement uncertainty with mistakes or anomalous results, thinking that all variations in results are due to errors.
To fix this, students should understand that uncertainty refers to the range of possible values due to limitations in measurement tools, while mistakes are specific errors that can be identified and corrected. Keep the correction anchored to Chemical measurements; check formula, substitution, calculation, final answer, and unit where relevant.
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