A graphical representation means showing information or data using pictures, images, or visual elements instead of written or numerical form. It helps to understand and interpret the data more easily. Full definition
It's really short, it's about a minute and a half but if you really want to show graphical representation of what your TV can do it's actually a remarkable demo. (video-games-galore.com)
However, it does provide a nice graphical representation for newbies. (captainaltcoin.com)
It relies predominantly on graphical representations, and this is a useful approach since people are primarily visual learners. (elearningindustry.com)