Includes bibliographical references and index.

Profiles -- Distances -- Quick partition algorithms -- The K-means algorithm -- Mixtures -- Partition by exact optimization -- The ditto algorithm -- Drawing trees -- Quick tree calculation -- Triads -- Single-linkage trees -- Distance and amalgamation algorithms -- Minimum mutation methods -- Direct splitting -- Direct joining -- Simultaneous clustering and scaling -- Factor analysis -- Prediction. Shows how Galileo, Newton, and Einstein tried to explain gravity. Discusses the concept of microgravity and NASA's research on gravity and microgravity.