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Edit
array_avg
description
Syntax
array_avg(array(type))Find the average of all data in an ARRAY and return this result.
example
mysql> select array_avg([11, 11, 12]);
+-----------------------+
| array_avg([11,11,12]) |
+-----------------------+
| 11.333333333333334 |
+-----------------------+
mysql> select array_avg([11.33, 11.11, 12.324]);
+---------------------------------+
| array_avg([11.33,11.11,12.324]) |
+---------------------------------+
| 11.588 |
+---------------------------------+keyword
ARRAY_AVG,ARRAY