approx_median
approx_median calculates the median value of a distribution of values. The value found has is approximately at the 50th percentile, within some error term (0.01, by default). approx_median(x) is equivalent to approx_percentile(0.5, x).
Parameter | Type | Description |
|---|---|---|
| decimal, double | the values to be counted |
| decimal, double | the maximum allowable error of the percentile to be found. Must be greater than 0.0 and less than 1.0, and must be the same for all values. This argument is optional, with default value 0.01 |
Returns: decimal
Example
Query:
PREFIX : <https://ddw-doccorp.linked.data.world/d/sparql-aggregation-sample-queries/>
PREFIX agg: <http://data.world/function/aggregate#>
SELECT (agg:approx_median(?foo) AS ?approx_median)
{
[ :col-aggregations-foo ?foo ]
}Result:
approx_median |
|---|
5.0 |