This data set provides 4 variables measured on 21 sleeping bags. The variables are temperature, weight, price, and material.
A data frame of dimenson 21 times 4.
Prediger, S. (1997). Symbolic objects in formal concept analysis. In G. Mineau, and A. Fall (eds.), Proceedings of the 2nd International Symposium on Knowledge, Retrieval, Use, and Storage for Efficiency.