Quick and easy, gives you a nice preview of the data's behavior.
Snazzy look is sure to impress fellow students.
It may also be covered with illegible notes. This one has the even more basic problem that the voltage data are plotted against row number instead of the radius. Smudgy pencil lines, slanty error bars, unlabeled axes. Data points lie on integer x-coordinates, relationship between variables looks very different from what you expected. Elegant and scientific-looking.