The following table lists terms that are commonly used with RUM reports:
|90th Percentile||An aggregation method generally used for large sets of data, where 90% of the data points are smaller and 10% are larger. Removing the top 10% is seen to eliminate data points that are far outside the norm.
|Aggregation method||A measure of statistical distribution.|
|Bar Chart||A graph that uses vertical (or horizontal) bars to compare data categories against a value or metric.|
|Dimension||For RUM, dimensions describe properties of the request, such as the browser used, or which features were used.
Within a dimension are various values. For example, a continent dimension may include the following five values: Asia (AS), Australia (Oceania–OC), Europe (EU), North America (NA), and South America (SA).
|Histogram||Histograms provide a visual interpretation of numerical data. They indicate the number of data points that lie within a range of values. The ranges are configurable between 0.1, 0,5, 1, and 2 seconds.|
|Median||An aggregation method for the “middle” value in a list of numbers. The median value is one where 50% of the values are larger, and 50% are smaller.|
|Metric||A metric is a standard for measuring or
evaluating something that is expressed in a numerical value. |
For available Navigation Timing metrics, see Available Metrics for RUM Reports.
|Pie Chart||A pie chart is a graphic in which each slice area is proportional to the quantity it represents.|