They might adjust the number of points awarded by the range of points people usually give -- if people mostly give 6-8 for 9.5's, and few people give out 3's, then that makes sense.
They might adjust the number based on what the person giving out the points normally does, so if you normally give out brutally honest answers, it doesn't tweak them.
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"A dead thing can go with the stream, but only a living thing can go against it." --G. K. Chesterton