75 lines
2.0 KiB
Markdown
75 lines
2.0 KiB
Markdown
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---
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layout: default
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title: Extended stats
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parent: Metric aggregations
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grand_parent: Aggregations
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nav_order: 30
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---
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# Extended stats aggregations
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The `extended_stats` aggregation is an extended version of the [`stats`]({{site.url}}{{site.baseurl}}/query-dsl/aggregations/metric/stats/) aggregation. Apart from including basic stats, `extended_stats` also returns stats such as `sum_of_squares`, `variance`, and `std_deviation`.
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The following example returns extended stats for `taxful_total_price`:
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```json
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GET opensearch_dashboards_sample_data_ecommerce/_search
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{
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"size": 0,
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"aggs": {
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"extended_stats_taxful_total_price": {
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"extended_stats": {
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"field": "taxful_total_price"
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}
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}
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}
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}
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```
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{% include copy-curl.html %}
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#### Example response
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```json
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...
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"aggregations" : {
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"extended_stats_taxful_total_price" : {
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"count" : 4675,
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"min" : 6.98828125,
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"max" : 2250.0,
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"avg" : 75.05542864304813,
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"sum" : 350884.12890625,
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"sum_of_squares" : 3.9367749294174194E7,
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"variance" : 2787.59157113862,
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"variance_population" : 2787.59157113862,
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"variance_sampling" : 2788.187974983536,
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"std_deviation" : 52.79764740155209,
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"std_deviation_population" : 52.79764740155209,
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"std_deviation_sampling" : 52.80329511482722,
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"std_deviation_bounds" : {
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"upper" : 180.6507234461523,
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"lower" : -30.53986616005605,
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"upper_population" : 180.6507234461523,
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"lower_population" : -30.53986616005605,
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"upper_sampling" : 180.66201887270256,
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"lower_sampling" : -30.551161586606312
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}
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}
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}
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}
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```
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The `std_deviation_bounds` object provides a visual variance of the data with an interval of plus/minus two standard deviations from the mean.
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To set the standard deviation to a different value, say 3, set `sigma` to 3:
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```json
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GET opensearch_dashboards_sample_data_ecommerce/_search
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{
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"size": 0,
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"aggs": {
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"extended_stats_taxful_total_price": {
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"extended_stats": {
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"field": "taxful_total_price",
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"sigma": 3
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}
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}
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}
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}
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```
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