Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the definition of accuracy?
💡 Hint: Think about how close your measurement is to what is known as correct.
Question 2
Easy
How do we express absolute uncertainty?
💡 Hint: Look at how you might report a measurement like weight or volume.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What term describes the closeness of a measured value to the true value?
- Precision
- Accuracy
- Reliability
💡 Hint: Think about what makes a measurement reliable.
Question 2
Are systematic errors consistent?
- True
- False
💡 Hint: Remember how these errors differ from random variations.
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Challenge Problems
Push your limits with challenges.
Question 1
A student measures the same liquid three times, getting 50.0 mL, 50.1 mL, and 50.2 mL. Calculate the average volume and the percentage uncertainty of the average.
💡 Hint: First, find the average and then consider how many measurements you took.
Question 2
In an experiment, you weigh a sample four times, getting results of 12.35 g, 12.40 g, 12.38 g, and 12.37 g. Determine the average mass and the absolute uncertainty of that average.
💡 Hint: Determine the average and then see how closely the repeated results cluster.
Challenge and get performance evaluation