Sampling Terminology and Theory
Sampling Terminology and Theory
Much of the terminology and concepts related to sampling is derived from the theory of statistical inference. People often become uncomfortable with statistical theory, but only an elementary understanding is required to understand the general concepts of sampling and data analysis covered here.
Rangeland Inventory, Monitoring, and Evaluation: Sampling Concepts
Rangeland Inventory, Monitoring, and Evaluation:
Sampling Concepts
Introduction | General Principles | Sampling Concepts | Vegetation Attributes
Rangeland Evaluation | Management Applications | Chapter Outline
Site Selection
Site Selection
Selection of sites for sampling is a critical consideration when designing rangeland inventory or monitoring schedules. Documentation of site locations, either on maps or with clear written directions, is also an important component of the sampling protocol.
Statistical Techniques
Statistical Techniques
Sample size (n) can be determined using a statistical approach that considers the variability of the population and our requirements for precision. The formula to determine the number of samples needed to meet these statistical criteria is