Accuracy vs. Precision

When a students gets the same experimental value over and over and over again, the student has good...

• Accuracy

• Precision

• Both Accuracy and Precision

When comparing a student's 'average experimental value' to a theoretical / expected value one is examining...

• Accuracy

• Precision

• Both Accuracy and Precision

Precision is quantified (mathematically calculated) by calculating _.

Which shooter has the BEST overall 'standard deviation'? The goal was to 'hit the center' of the bullseye.

• Shooter A

• Shooter B

• Shooter C

Which shooter has the BEST overall 'precision'?

• Shooter A

• Shooter B

• Shooter C

Which shooter has the BEST overall 'accuracy'?

• Shooter A

• Shooter B

• Shooter C

Three groups have the following standard deviations in a recent lab.

Group A = 1.234

Group B = 1.421

Group C = 1.345

Order the groups from BEST to worst Standard Deviation.

• A, C, B

• B, C, A

• B, A, C

• A, B, C

In a lab experiment, which would a teacher prefer their students have?

• Precision

• Accuracy

The reason that Mr. Ackert and other teachers would rather a student have precision is because they are doing the procedure similar each time, they are consistent. Often accuracy is a product of the quality of equipment being used. Make sense???

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A group of students are suppose to build a pendulum that has an exact period of 5.0 seconds. The group builds their pendulum, then tests the pendulum 4 times. They get experimental periods of 5.7, 5.8, 5.5, and 5.8. What is the groups "PERCENT ERROR". You may use notes to find the formula, if needed. Round your percent error to tenths.