So the query SAMPLE QUERY 1 is just reporting on the table you have in there I'm assuming you've run an aggregate query, and just cut and paste that into your database for the sake of example.
I see what your problem is, you're trying to look at the PREVIEW before you finish the product, what I would suggest instead is this:
Create a graph, include the WEEK ENDING and TOTAL $ SALES fields (by the way, you shouldn't ever use special characters in ANY of your object names in ms access, it can really screw things up with your coding)
Just accept whatever it tells you, select your line graph then accept everything and let it create it.
The graph wizard is a joke so when it's done creating go to the ROW SOURCE property of the graph and look at the query it built, it's trying to make a crosstab which you don't want so put in this code:
Code:
SELECT [Sample Query 1].[Week Ending], Sum([Sample Query 1].[Total $ Sales]) AS [Net Sales] FROM [Sample Query 1] GROUP BY [Sample Query 1].[Week Ending] HAVING ((([Sample Query 1].[Week Ending]) Between [Enter Start Date] And [Enter End Date]));
Then you should have a line graph of total sales by week ending.