The mistake many students make is that they provide tables or graphs of means and do not provide text that explains the figures. The tables and graphs are there to complement the text, not to replace it. One further problem students have is with how much information they need to put in this section. Students often provide too much information, for example graphs of participant's individual scores. It you are looking at only one effect then only one graph and also perhaps a table are necessary.
Raw data is the individual scores for each participant.