MS sql query to get average of sum column : MS sql query to get average of sum column

I have Volume column which group in 5 minutes gap and sum of Volume column Now I want average of SumVolume column I tried here to do but its coming from Volume Column I want from SumVolume Column

[enter image description here][1]


[enter image description here][2] I want average value from SumVolume column


  [1]: https://i.stack.imgur.com/SplKw.png
  [2]: https://i.stack.imgur.com/Jrebn.png