Abstract
A comparison is made between the use of a stratified universe and an unstratified universe of cultures for sampling purposes. Samples are taken from the Ethnographic Atlas (1) by selecting from culture clusters (a first level of stratification of cultures) and (2) by a random selection from the total list of cultures in the Atlas. The analysis is done regionally, for Africa and North America. A chi-square, two-sample test indicates the essential similarity of the stratified and the unstratified universes; no significant statistical difference is found among the samples.

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