Calculating average of values in a percentile

Elastic Stack Elasticsearch
1

Hi,

I'm reproducing an old client report, and have discovered that what was reported as an average, was in fact the average of 90% of the available data (ie, the top 10% of the count of values was removed)

Is there a way of calculating the average of data that falls within the 90th percentile in Elasticsearch? I'm on Elasticsearch 5.4.0.

Thanks,

Simon

2

The percentiles aggregation should give you what you want... https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-percentile-aggregation.html

You don't have to ask for an array of percentiles, you can ask for just a single one.

3

Hi DPattee,

From what I understand that will give me the value of the 90th percentile, but I can't see how to a calculate the average of all the values in my dataset (a bucket?) that are less than or equal to the 90th percentile.

Thanks,

Simon

4

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