Return the average total amount purchased and total value purchased for the supplier who supplies the greatest number of products.
SELECT avg(total_amount_purchased) ,  avg(total_value_purchased) FROM Product_Suppliers WHERE supplier_id  =  (SELECT supplier_id FROM Product_Suppliers GROUP BY supplier_id ORDER BY count(*) DESC LIMIT 1)
SELECT avg(total_amount_purchased) ,  avg(total_value_purchased) FROM Product_Suppliers WHERE supplier_id  =  (SELECT supplier_id FROM Product_Suppliers GROUP BY supplier_id ORDER BY count(*) DESC LIMIT 1)
[{'avg(total_amount_purchased)': 37602.4675, 'avg(total_value_purchased)': 56499.6425}]