can i make a report showing open vs closed work items using jazz reporting services?
Accepted answer
You'll choose to report on WIs, setting any conditions needed. You'll add Calculated Columns to count the number of open and the number of closed work items, and you'll select the Graph visualization and add bars for each of the columns. This is described quite well in the online help topic:
https://jazz.net/help-dev/clm/index.jsp?re=1&topic=/com.ibm.team.jp.jrs.doc/topics/t_jrs_create_reports.html
especially the Format Results section of that topic. (You should be able to find it in your local help instance also.)