Scan before reading the question! … Though it might encourage you to jump right into the question, especially if you are short of time. But avoid doing that. The question on test will make no sense if you ignore the context that the given figure provides you. You may end up reading the question, even rereading the question or looking over the graphs in search of information you need. It’s a better idea to scan the figure first instead of doing all these things and wasting your time. You will want to go through the headings, the units of measurements etc. and then make note of any missing information. Once you are done with this exercise, move on.