# Calculating Summary Level Average of a Calculated Field

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Hello,

As you see below, the table breaks down weekly average transaction by week for the current period and year, how do I get the average of both weeks at the summary level? WPSA-Transaction is a calculated field that uses this formula to calculate average per week (SUM(`CY_TRANSACTION`) / COUNT(DISTINCT `STORE_ID`))

When I group by just period, domo calculates the average for the whole period, but that is not what I want, I would like to get the average of the weekly average for the period.

```((SUM(`CY_TRANSACTION`) / COUNT(DISTINCT `STORE_ID`))) / COUNT(DISTINCT `YEAR_PERIOD_WEEK`)
```AVG(SUM(`CY_TRANSACTION`) / COUNT(DISTINCT `STORE_ID`)) FIXED (BY `YEAR_PERIOD_WEEK`)