13.3. Measurement Precision and Accuracy

Try these first

1. 1.

   Define accuracy in the context of measurements.

   Hint

   Think about how we compare a measurement to what's correct.

2. 2.

   What does precision measure?

   Hint

   Consider what happens when the same measurement is repeated several times.

3. 3.

   What best defines accuracy?

   • Consistency of measurements
   • Closeness to the true value
   • Difference between measurements

   Hint

   Think about what measurement is closest to the real value.

4. 4.

   True or False: Precision measures how close a measurement is to the true value.

   • True
   • False

   Hint

   Consider what you mean when you say repeatability.

5. 5.

   Discuss how discrepancies in measurement instruments can impact both precision and accuracy in geospatial studies.

   Hint

   Consider how calibration processes affect results.

6. 6.

   Propose a method to test and validate the accuracy and precision of a new measurement tool in a field study.

   Hint

   Think about the components needed to perform a validation study.