Accuracy vs. Precision

Notes for Page 15.

Science is based on measurement.
Scientists test the same measurement over and over.

Accuracy
Closeness to the True Value
When a measurement equals the True Value

True Value is what you expect to get.
It is also referred to as the Accepted Value or the Given Value.

Ex.
Hits the Bulls eye

Precision
Degree of reproduce-ability
When you get the same number over and over.

You can be precise, but not accurate.
You can be accurate, but not precise.
You can be precise and accurate.

Websites

This website has explanations as well as examples.