| Term | Definition |
|---|---|
| Estimate | An approximation of a number based on reasonable assumptions. |
| Accuracy | How close a measurement if to the true accepted value. |
| Precision | How close a group of measurements are to each other. |
| Significant Figures | All the digits in a measurement that have been measured exactly, plus one digit whose value has been estimated. |
| Percent Error | A calculation used to determine how accurate, or close to the true value, an experimental value really is. |
| Mean | The numerical average of a set of data. |
| Median | The middle number in a set of data. |
| Mode | The number that appears most often in a list of numbers. |
| Range | The difference between the greatest value and the least value in a set of data. |
| Anomalous Data | Data that do not fit with the rest of a data set. |
