Hi,
Otherwise, if you want to be able to restrict the statistics per dates, reports will be necessary.
Something like that:
i.imgur.com/rd9QIks.png
So, basically, you set the display "type" to "listing", the data "type" to "products", and then the displayed information to "orders".
You can then restrict per order statuses, per period, etc and you'll get a listing of the products with their names, the number of sales, and the amount purchased. For example, on our demo website:
i.imgur.com/zHHGSy2.png