How to make a bar graph if I already have the media and the SD?
The FAQ# 1741 from the official website offers information about the procedure related to the bar graph creation. I recommend checking the website to find more about the procedure. The guide is heavily details, but there isn't something you won't understand and the instructions are simple, although many steps are involved.
FAQ page: http://www.graphpad.com/support/faqid/1741/