Accuracy and precision are important concepts, as they relate to any experimental measurement that you would make.

### Accuracy Review

Accuracy refers to the agreement between experimental data and a known value. You can think of it in terms of a bullseye in which the target is hit close to the center, yet the marks in the target aren't necessarily close to each other.

### Precision Review

Precision refers to how well experimental values agree with each other.

If you hit a bullseye precisely, then you are able to hit the same spot on the target each time, even though that spot may be distant from the center.

### Keep in Mind

Data can be very precise such that each data point is close to the others, yet contain a high degree of experimental error.

### Learn More

How To Calculate the Mean or Average

Calculate Mean, Median, Mode, and Range

How To Calculate Standard Deviation