locfit (version 1.5-9.10)

stamp: Stamp Thickness Dataset

Description

Thicknesses of 482 postage stamps of the 1872 Hidalgo issue of Mexico.

Usage

data(stamp)

Format

Data frame with thick (stamp thickness) and count (number of stamps) variables.

References

Izenman, A. J. and Sommer, C. J. (1988). Philatelic mixtures and multimodal densities. Journal of the American Statistical Association 73, 602-606.