because of the gravity
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specific application of statistics in education - when a teacher computes the grades of students statistic is appiled
It is important in any statistic measure
Probably their average grade / GPA ;-)
An important statistic is the percent of rooms filled each night.
Any decision based on the test statistic is marginal in such a case. It is important to remember that the test statistic is derived on the basis of the null hypothesis and does not make use of the distribution under the alternative hypothesis.