González Revaldería J, Villafruela J J, Sabater J, Lamas S, Ortuño J
Comput Biol Med. 1986;16(4):311-7. doi: 10.1016/0010-4825(86)90015-6.
A simple program for an HP-97 desk top calculator, which can be adapted to an HP-67, is presented. This program detects the presence of an added component of variance in any series classified with a unique criterion. Each series can be formed by any number of data. The program supplies additional information about this component. A brief theoretical description and a practical example are also included.