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Subject 1. The Nature of Statistics tion are called parameters, and values from a sample are called statistics.
A parameter is a numerical quantity measuring some aspect of a population of scores.
The mean, for example, is a measure of central tendency. <span>Greek letters are used to designate parameters. Parameters are rarely known and are usually estimated by statistics computed in samples. Populations can have many parameters, but investment analysts are usually only concerned with a
last interval [days]
repetition number in this series
scheduled repetition interval
last repetition or drill
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