Accuracy and Precision

Question 1

What does accuracy mean?

Answer 1

How close a measured value is to its actual, true value.

Question 2

What does precision mean?

Answer 2

How close a number of measured values are to each other.

Question 3

What is ERROR in terms of accuracy and precision?

Answer 3

This is the difference between the true value and the measured value.

Question 4

What is the PERCENTAGE ERROR in terms of accuracy and precision?

Answer 4

This is when the error is expressed as a percentage of the true value.