Your Vend Avg. Items Per Sale tile gives you the option to view Item Sales by Day, Month or Financial Year.
Go into Vend and follow the steps to find the corresponding information.
1. Under Reporting select Sales Reports
2. Set the Measure drop down to Basket Size
3. Select the date parameter according to the Tile that you wish to find by Day, Month or Year and then apply the changes.
4. You will now see the Basket Size (Avg. Items Per Sale) based on your date search and this figure should match what is being shown in your Tile