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Comprehensive
Dictionary Suite
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bell-shaped curve a graphic representation of a statistically normal frequency distribution, which resembles the outline of a bell; bell curve.
decile in statistics, any of the values that divide a frequency distribution into ten groups of equal frequency, or any one of these groups.
histogram a bar graph of a frequency distribution in which the frequency of a variable is represented by the height of the bar, and the class interval by the width, where each class interval is a summary of data that represents a range of independent variable values rather than a single value.