This work is licensed under a Creative Commons Attribution-ShareAlike 3.Identifies the type of aggregation used to combine related categories, usually within a common branch of a hierarchy, to provide information at a broader level than the level at which detailed observations are taken. (From: The OECD Glossary of Statistical Terms)
| Value of the Code | Descriptive Term of the Code | Definition of the Code |
|---|---|---|
| Sum | Sum | A value obtained as a result of adding two or more numbers (items/amounts). |
| ArithmeticMean | Arithmetic Mean | Mathematical average of a set of values. The mean is calculated by adding up two or more values and dividing the total by their number. In social/political science, it is usually the sum of the measurements divided by the number of subjects, or cases. |
| Count | Count | Total number of units in a group of items |
| Mode | Mode | The value that appears most often in a set of values |
| Median | Median | The middle value in a series of values arranged sequentially from smallest to largest. |
| Maximum | Maximum | The highest value attained or recorded. |
| Minimum | Minimum | The lowest value attained or recorded. |
| Percent | Percent | The number of parts out of 100. In mathematics, a percentage is a number of ratio expressed as a fraction of 100. Percentages are used to express how large one quantity is relative to another quantity. |
| CumulativePercent | Cumulative Percent | The total of a frequency and all frequencies below it in a frequency distribution; the "running total" of frequencies [the maximum value is 100%]. |
| PercentileRank | Percentile Rank | The percentile rank of a item is the percentage of items in its frequency distribution which are lower [cannot reach 100%]. |
| Other | Other | Use when the aggregation method is known, but not found in the list. |
Identification of the type of aggregation method used. Supports the use of a controlled vocabulary.
| Module Name | Element Name |
|---|---|
| reusable | AggregationMethod |
The "otherAggrMeth" attribute holds a value from a controlled vocabulary when the aggrMeth attribute has a value of "other". This option should only be used when applying a controlled vocabulary to this attribute. Use the complex element controlledVocabUsed [in the Document Description section] to identify the controlled vocabulary to which the selected term belongs.
| Element Number in DDI 2.1 | Element/Attribute Name |
|---|---|
| 4.3 | var@otherAggrMeth |
| 4.4.13 | measure@otherAggrMeth |
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