This metric visualizes the average order value for a given period. You can specify a certain period and compare it with a previous period/year. 

The average order value is calculated by dividing the total value of all orders by the number of orders. 

The graph visualizes data according to the period you have set, whether it's hourly, daily, monthly, or yearly. It shows the average order value and the number of orders from which it was calculated. 

The data for the average order value is visualized based on the order statuses you have set in "Settings". For more information, please see the provided link.