You are here

Keyword: probability samples

For what applications can probability and non-probability sampling be used?

Publications Posted on: January 14, 2010
Almost any type of sample has some utility when estimating population quantities. The focus in this paper is to indicate what type or combination of types of sampling can be used in various situations ranging from a sample designed to establish cause-effect or legal challenge to one involving a simple subjective judgment.

Effects of sample survey design on the accuracy of classification tree models in species distribution models

Publications Posted on: April 02, 2007
We evaluated the effects of probabilistic (hereafter DESIGN) and non-probabilistic (PURPOSIVE) sample surveys on resultant classification tree models for predicting the presence of four lichen species in the Pacific Northwest, USA. Models derived from both survey forms were assessed using an independent data set (EVALUATION).