1. Accuracy and precision

2. Accuracy and Precision
How close the measurement is to the accepted value
Precision
You get close to the same measurement each time.

3. Practice
Marcus Paige hits 3 out of 10 free throws. All his shots hit the backboard in the same area.
Did he have good accuracy? No
Did he have good precision?
Yes

4. Marshall Plumlee hits 2 out of 10 free throws
Marshall Plumlee hits 2 out of 10 free throws. One hits the backboard, one hits a cheerleader, one hits Coach K, etc…
Did he have good accuracy? No
Did he have good precision?

5. Cat Barber hits 10 out of 10 free throws.
Did he have good accuracy?
YES!
Did he have good precision?