Find average per month

[qlikwiz123]

I have 'month' field in Dimension and 'Count(IDs)' as Measure in my table

I need to calculate average number of IDs per month. How do I do it? I thought it should be Count(IDs)/ Count (Total IDs) but it is not right.

[Vegar · Accepted solution]

Try

count(IDs)/Count(distinct Month)