Interval-valued data for 5 teams in a local pickup league, classified
by season performance. Each team is described by ranges of player age,
weight, and speed.
speed: Speed range -- time to run 100 yards (seconds).
Details
The symbolic results are more informative than classical midpoint analyses:
the Very Good team has homogeneous players, whereas the Poor team has
players varying widely in age, weight, and speed. Used for symbolic
principal component analysis.
References
Billard, L. and Diday, E. (2006). Symbolic Data Analysis. Wiley.
Table 2.24, p.63.