1. Accuracy and Precision Created by The North Carolina School of Science and Math.The North Carolina School of Science and Math Copyright 2012. North Carolina Department of Public Instruction.North Carolina Department of Public Instruction Created by The North Carolina School of Science and Math.The North Carolina School of Science and Math Copyright 2012. North Carolina Department of Public Instruction.North Carolina Department of Public Instruction

2. Accuracy Brainstorm: When have you heard the term “accuracy”?

3. Accuracy DEFINITION: How closely a measurement “agrees with” an accepted value; or how “close” a measurement is to the correct or actual value.

4. Accuracy HIGH ACCURACY LOW ACCURACY

5. Precision Brainstorm: When have you heard the term “precision”?

6. Precision DEFINITION: How closely a measurement “agrees with” other values measured in the same context; or how “repeatable” a measurement is compared to other measurements

7. Precision HIGH PRECISION LOW PRECISION

8. Accuracy vs. Precision SO, what is the difference?

9. Accuracy vs. Precision HIGH PRECISION HIGH ACCURACY HIGH PRECISION LOW ACCURACY

10. Accuracy vs. Precision LOW PRECISION LOW ACCURACY LOW PRECISION HIGH ACCURACY

11. How accurate and precise are you? GOAL: To be as accurate and precise with your measurements as possible! DIRECTIONS: Follow the directions on the “Engineering Accuracy and Precision” activity sheet. Record all answers.