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Stem-and-Leaf Display
A graphical method used to display quantitative data where each number is split into a stem (the leading digits) and a leaf (the last digit).
Simpson's Paradox
A phenomenon in statistics where a trend appears in several different groups of data but disappears or reverses when these groups are combined.
Aggregated Crosstabulation
A statistical method used to analyze and summarize data between two or more categorical variables in a table format.
Unaggregated Data
Raw data collected at its most detailed or base level, not yet summarized or grouped into larger categories.
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