# Are aggregation results accurate except cardinality?

**URL:** <https://discuss.elastic.co/t/are-aggregation-results-accurate-except-cardinality/122573>\
**Category:** Elasticsearch\
**Created:** [March 5, 2018, 6:34pm UTC](https://discuss.elastic.co/t/are-aggregation-results-accurate-except-cardinality/122573 "2018-03-05T18:34:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cemremengu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cemremengu/32/26943_2.png) [@cemremengu](https://discuss.elastic.co/u/cemremengu)\
**Post date:** [March 5, 2018, 6:34pm UTC](https://discuss.elastic.co/t/are-aggregation-results-accurate-except-cardinality/122573/1 "2018-03-05T18:34:29Z")

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Hello,

According to [here](https://www.elastic.co/guide/en/elasticsearch/guide/current/_approximate_aggregations.html) cardinality and percentiles are approximate aggregations.

I just want to make sure; is this also true for other types of aggregations as well such as sum or average or maybe aggregations done with [scripting-module](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-scripting.html)?

If so, in what cases?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 2, 2018, 6:34pm UTC](https://discuss.elastic.co/t/are-aggregation-results-accurate-except-cardinality/122573/2 "2018-04-02T18:34:38Z")

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