README.md · cryptotaxi247/netdata-1

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1	# Average or Mean
2
3	> This query is available as `average` and `mean`.
4
5	An average is a single number taken as representative of a list of numbers.
6
7	It is calculated as:
8
9	```
10	average = sum(numbers) / count(numbers)
11	```
12
13	## how to use
14
15	Use it in alerts like this:
16
17	```
18	alarm: my_alert
19	on: my_chart
20	lookup: average -1m unaligned of my_dimension
21	warn: $this > 1000
22	```
23
24	`average` does not change the units. For example, if the chart units is `requests/sec`, the result
25	will be again expressed in the same units.
26
27	It can also be used in APIs and badges as `&group=average` in the URL.
28
29	## Examples
30
31	Examining last 1 minute `successful` web server responses:
32
33	- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
34	- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=orange)
35	- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
36
37	## References
38
39	- <https://en.wikipedia.org/wiki/Average>.
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