... dealt with in a moment. Notice, first, that many scales appearing to be numerical and interval are not anything of the sort. for instance, the marking of essays in college. In many institutions, ... curve is contained between the central po 50 points on this test, since the standard deviation is (mean) and the point where one standard deviation falls. In fact, working of one standard deviation, ... about. In fact, research plods along all the time, largely according to Figure 1.1. Although, from reading about research, it is easy to think about a single project beginning and ending at...