3 pts 3 2 0–1 Question 2 Correctly describes and Describes differences in Struggles to describe explains differences in accuracy and precision differences in accuracy accuracy and precision between measurements and precision between between measurements types. Struggles to measurements Recognizes articulate why time Cannot explain coordinated dependent. coordinated errors. errors. 3 pts 3 points: 1–2 points: 0–1 points: Question 3 For each of GNSS Answered the questions Failed to correctly attribute device, correctly gave the correctly but failed to error to the correct source accuracy, precision, and either correctly attribute or didn’t discuss the two uses. error to the correct source differences in consumer or didn’t discuss the versus commercial grade Identified that change differences in consumer equipment cannot be detected if the versus commercial grade reported error or And equipment uncertainty is greater than Failed to identify change the amount of change And/Or couldn’t be detected. measured. Failed to identify change couldn’t be detected. 5 pts 5 3–4 0–2 Question 4 Correctly attributed each Answered the questions Failed to correctly attribute grade of GNSS equipment correctly but failed to error to the correct source with the correct accuracy either correctly attribute or didn’t discuss the and precision. error to the correct source differences in consumer or didn’t discuss the versus commercial grade Identified that commercial differences in consumer equipment grade receivers are versus commercial grade capable of higher And/Or equipment precision than consumer Lists less than two uses grade because of the And/Or for each of grade ability to correct signal Lists less than two uses deviations for each grade of device Lists two uses for each grade of device 3 pts 3 2 0–1 Question 5 Correctly explains the Correctly explains the Does not provide clear or value in making value in making correct answers. uncertainties explicit with uncertainties explicit with all measurements. all measurements. Answer articulates how Answer starts to explain large uncertainties can how uncertainties can make hazard assessment obscure confident results. difficult to do confidently.
3 pts Question 2 3 Correctly describes and explains differences in accuracy and precision between measurements Recognizes coordinated errors. 2 Describes differences in accuracy and precision between measurements types. Struggles to articulate why time dependent. 0–1 Struggles to describe differences in accuracy and precision between measurements Cannot explain coordinated errors. 3 pts Question 3 3 points: For each of GNSS device, correctly gave the accuracy, precision, and two uses. Identified that change cannot be detected if the reported error or uncertainty is greater than the amount of change measured. 1–2 points: Answered the questions correctly but failed to either correctly attribute error to the correct source or didn’t discuss the differences in consumer versus commercial grade equipment And/Or Failed to identify change couldn’t be detected. 0–1 points: Failed to correctly attribute error to the correct source or didn’t discuss the differences in consumer versus commercial grade equipment And Failed to identify change couldn’t be detected. 5 pts Question 4 5 Correctly attributed each grade of GNSS equipment with the correct accuracy and precision. Identified that commercial grade receivers are capable of higher precision than consumer grade because of the ability to correct signal deviations Lists two uses for each grade of device 3–4 Answered the questions correctly but failed to either correctly attribute error to the correct source or didn’t discuss the differences in consumer versus commercial grade equipment And/Or Lists less than two uses for each grade of device 0–2 Failed to correctly attribute error to the correct source or didn’t discuss the differences in consumer versus commercial grade equipment And/Or Lists less than two uses for each of grade 3 pts Question 5 3 Correctly explains the value in making uncertainties explicit with all measurements. Answer articulates how large uncertainties can make hazard assessment difficult to do confidently. 2 Correctly explains the value in making uncertainties explicit with all measurements. Answer starts to explain how uncertainties can obscure confident results. 0–1 Does not provide clear or correct answers.
unit_1_accuracy_precision_1524502450753242633.docx