16. Detectability and Sampling

  1. Steven K. Thompson

Published Online: 10 FEB 2012

DOI: 10.1002/9781118162934.ch16

Sampling, Third Edition

Sampling, Third Edition

How to Cite

Thompson, S. K. (2012) Detectability and Sampling, in Sampling, Third Edition, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118162934.ch16

Author Information

  1. Simon Fraser University, Canada

Publication History

  1. Published Online: 10 FEB 2012
  2. Published Print: 23 FEB 2012

Book Series:

  1. Wiley Series in Probability and Statistics

Book Series Editors:

  1. Walter A. Shewhart and
  2. Samuel S. Wilks

ISBN Information

Print ISBN: 9780470402313

Online ISBN: 9781118162934



  • detectability;
  • double-sampling ratio estimation methods;
  • multiple regression methods;
  • random sampling;
  • simple random sampling


This chapter begins with a discussion on constant detectability over a region. Next, it focuses on estimating detectability. In most situations, the probability of detection would not be known but would be estimated by one method or another. Double-sampling ratio estimation methods apply when an accurate count is made for a subsample of the units surveyed by the usual survey method. Multiple regression methods have been suggested for correcting for imperfect detectability in aerial surveys. The chapter discusses the effect of estimated detectability. It concludes with a discussion on estimated detectability and simple random sampling.

Controlled Vocabulary Terms

estimating equations; random sampling; regression