What are the minimum, average, and maximum quantities ordered? Check all the invoices.
SELECT min(Order_Quantity) ,  avg(Order_Quantity) ,  max(Order_Quantity) FROM INVOICES
SELECT min(Order_Quantity) ,  avg(Order_Quantity) ,  max(Order_Quantity) FROM INVOICES
[{'min(Order_Quantity)': '1', 'avg(Order_Quantity)': 1.6, 'max(Order_Quantity)': '2'}]