Descriptive Statistics

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4 domain-specific abstractions whose origin domain is Descriptive Statistics.

• Five-number summary — Compress a univariate ordered dataset into minimum, first quartile, median, third quartile, and maximum, exposing center, spread, skew, and extremes while remaining dependent on the chosen quartile convention.
• Seven-number summary — A descriptive-statistics summary using seven ordered quantiles to show center, spread and tail structure more finely than a five-number summary.
• Summary statistics — Compact numerical measures that describe central tendency, dispersion, distribution shape, or relationships in a set of observations.
• Variation ratio — A nominal-data dispersion measure equal to the proportion of observations outside the modal category.