3.3. Significance of Repeatability

Try these first

1. 1.

   What does repeatability refer to in measurements?

   Hint

   Think about what happens if you measure something multiple times.

2. 2.

   Name one factor that can lead to measurement error.

   Hint

   Consider influences that might affect the measuring process.

3. 3.

   What is repeatability in measurement?

   • Consistency of results
   • Accuracy of results
   • Calibration importance

   Hint

   Think about how often you want your measurement to stay the same.

4. 4.

   True or False: Calibration is only necessary once when you buy an instrument.

   • True
   • False

   Hint

   Consider how often you check your tools for accuracy.

5. 5.

   You take three measurements of a sample, and they yield 5.1g, 4.9g, and 5.0g. Analyze the precision of these measurements.

   Hint

   What do you figure out when you look at how similar those numbers are?

6. 6.

   During an experiment, you think your measurement tool is giving inconsistent readings. What steps would you take to confirm its reliability?

   Hint

   Consider what you'd want to do to test if your instrument is correct.