hierarchy: Hierarchy Dataset

In dataSDA: Datasets and Basic Statistics for Symbolic Data Analysis

Hierarchy Dataset

Description

Classical (microdata) dataset of 20 observations illustrating hierarchical categorical structures with a response variable Y and hierarchical predictors X1–X5. See hierarchy.int for the interval-valued version.

Usage

data(hierarchy)

Format

A data frame with 20 observations and 6 variables:

• Y: Response variable (numeric).

• X1: Hierarchy level 1 category (a/b/c, character).

• X2: Hierarchy level 2 category (a1/a2, character; NA for non-a).

• X3: Hierarchy level 3 category (a11/a12, character; NA for non-a1).

• X4: Numeric predictor for group b (numeric; NA for non-b).

• X5: Numeric predictor for group c (numeric; NA for non-c).

Metadata

Sample size (n)	20
Variables (p)	6
Subject area	Methodology
Symbolic format	Classical (microdata)
Analytical tasks	Aggregation, Descriptive statistics

References

Billard, L. and Diday, E. (2006). Symbolic Data Analysis. Wiley. Table 2.15.

Examples

data(hierarchy)

dataSDA documentation built on June 12, 2026, 9:06 a.m.