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Descriptive Statistics
Amanda Ross, Victor L. Willson
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Abstract
The field of statistics can be divided into the categories of descriptive statistics and inferential statistics. Descriptive statistics are used to characterize a sample and include computations that do not require any inference about a population, such as frequencies, percentages, median, mean, mode, standard deviation, z-scores, variance, range, and interquartile range. Such statistics prove very useful when sample sizes are not large enough to warrant other tests.