| Bivariate data | A collection of paired data values.
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| Box Plot | A graphical display based on five statistics: the minimum value, Q1 (the first quartile), Q2 (the median), Q3 (the third quartile) and the maximum value.
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| Contingency table | A table used to classify sample observations according to two or more identifiable characteristics.
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| Dot Plot | A graph for displaying a set of data. Each numerical value is represented by a dot placed above a horizontal number line.
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| First Quartile | The point below which ¼ or 25% of the ranked data values lie. (It is designated Q1).
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| Interquartile Range | The difference between the third quartile, Q3, and the first quartile, Q1. It is the range of the middle 50% of the data values.
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| Scatter diagram | A graph in which paired data values are plotted on an X,Y Axis
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| Stem-and-Leaf Display | A statistical technique for displaying a set of data. Each numerical value is divided into two parts: The leading digit(s) become the stem, and the trailing digits the leaf. The stems are located along the main vertical axis, and the leaf for each observation along the horizontal axis.
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| Third Quartile | The point below which ¾ or 75% of the ranked data values lie. (It is designated Q3)
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