1. Good Morning! Shoot-Around
How many sig figs are in ?
How many sig figs are in
Solve:
4. Solve:

2. Accuracy, Precision, Percent Error
Mr. Ramsey

3. Accuracy and Precision
Definition
Accuracy – How close a measured value is to the actual true value Precision – How close the measured values are to each other

4. Percent Error

5. Percent Error
Practice
Clyde Clumsy was directed to weigh a 500 g mass on the balance. After diligently goofing off for ten minutes, he quickly weighed the object and reported 458 g.
Willomina Witty was assigned to determine the density of a sample of nickel metal. When she finished, she reported the density of nickel as 5.59 g/ml. However, Miraculous knew the density of nickel was 6.44 g/ml

6. Exit Ticket What is the difference between precision and accuracy?
Skye is learning how to fire a bow and arrow, and she is becoming a pro quickly. She fires three arrows and her coach tells her any average above a 7.5 is pretty accurate. If 10 is the bulls-eye, and Skye hit a 6, 8, and a 10, does she have a good accuracy? Is her precision better? Justify your answer. When finished please turn your sheet into the tray.