Accuracy and Precision

Refers to how close a measured value is to an accepted value

• Error

• Precision

• Accuracy

• Percent error

Refers to how close a series of measurements are to each other

• Accuracy

• Precision

• Error

• Percent Error

True of False: % error = accepted - estimated / estimated X 100

• True

• False

What does absolute value?

• Changes all answers to negative

• Changes all answers to positive

• The 100% actual number, no rounding

• None of the above

If a number is measured by you, is that the accepted value or the estimated value

• Accepted

• Estimated

Which of the following are key words for the accepted value? Choose all that apply

• Guessed

• Stated in textbook

• Stated on product label

• Measured by a student

What do you multiply the error by?

• 100

• You don't multiply

• You don't multiply, you divide

• By the accepted value