Precision reflects the reproducibility of a given type of measurements (same answer) • Accuracy reflects how close a group of measurements are to an accepted value (right answer)
The dart throws reflect measurements that are: • precise • not accurate
The dart throws reflect measurements that are: • accurate • precise
This dart board reflects measurements that are: • not accurate • not precise
Not accurate Not precise Not accurate Precise Accurate Precise Actual density of copper = 8.94 g/cm3 Which student had the best lab technique? What could you say about Student B’s lab technique? What is evident about Student A’s lab technique? Student C Makes the same mistake over and over Sloppy in his measurements
Which lab group measured the volume of the liquid with the most precision?
These data were gathered by four groups of students. Each group performed four trials to test the acceleration rate of a toy car. Which group had the most precise data?