Data Displays Summary

There are some features that should be considered when interpreting any data display. A cluster is a point on the display where the data are clustered around a specific value. A gap is an interval on the display where there is no data. An outlier is a data value that is substantially different from the rest of the data. Each of these features should be investigated to determine if it was reported in error or if it has a specific cause.

To solidify your understanding of data displays, visit the following link to StatTrek.com. It provides examples, tutorials, and interactive practice with answers available. You can move easily from one lesson to the next and skip lessons that you do not need to review.

Statistics Tutorial: Patterns & Data