One of the most useful tools to a sales department is determining trends. Through the use of these graphs, salespeople can see downward trends and can take measures to increase sales of a particular item. Management may also wish to reward salespeople for sharp upward trends in the sales of a product.  

 

Purchasing may use trends from prior years or periods to determine purchase requirements.

 

That is why entrée includes graphical representations of the historical data.  It is much easier to see trends when looking at graphs and charts than looking at numbers in a table.