Someone calls you and gives you a phone number. You don't have any paper or pencil to write the number down so you repeat the number until you are able to write it down. This is an example of rehearsal.
A practice session approach makes use of repeated exercise of statistics to analyze it. When a pupil is supplied with unique statistics to be learned, together with a list, regularly he's going to try to memorize the statistics via way of means of repeating it over and over.
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