Practice Basic Definitions (1.1) - Unit 11: Measurement and Data Processing

Practise this section

10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define accuracy in your own words.
Show hintHide hint
Think about how a target works - hitting the bullseye.
Question 2.
What is precision?
Show hintHide hint
Consider if you throw darts and they hit the same region.
3Question 3.
What is accuracy?
- A measure of consistency
- Closeness to the true value
- The difference between two values
Show hintHide hint
Consider what it means to hit the target.
4Question 4.
True or False: Precision refers to the accuracy of a measurement.
- True
- False
Show hintHide hint
Think about dart throws.
Question 5.
A scientist measures a solution's pH three times and gets 5.8, 5.6, and 5.7. The accepted pH is 6.0. Calculate the error and discuss accuracy and precision.
Show hintHide hint
Look at measurements versus accepted values.
Question 6.
In a set of five measurements, if uncertainty reflects ±0.05 units and the measurements are clustered tightly, discuss the implications of both precision and uncertainty on experimental results.
Show hintHide hint
Think about sources of error that may be present.

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