In statistics the frequency (or absolute frequency) of an event is the number of times the event occurred in an experiment or study. These frequencies are often graphically represented in histograms. The relative frequency of an event refers to the absolute frequency normalized by the total number of events: The values of for all events can be plotted to produce a frequency distribution.
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When to train to increase life longevity
Few will argue about the importance of exercise to increase life longevity. But about the best time of day for them, opinions differ. Coach Deanna Hammond-Blackburn believes that it is best to...
Heartburn can be a manifestation of a fatal illness
American scientists conducted a study that showed that gastroesophageal reflux disease, one of the manifestations of which is heartburn, is associated with a high risk of developing cancer of the larynx and...