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United States Department of Agriculture

Agricultural Research Service

Research Project: ECOLOGY, SAMPLING, AND MODELING OF INSECT PESTS OF STORED GRAIN, PROCESSING FACILITIES, AND WAREHOUSES

Location: Stored Product Insect Research Unit

Title: Experimental Design: Statistical Considerations and Analysis

Authors
item Campbell, James
item Wraight, Stephen

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: September 15, 2006
Publication Date: June 1, 2007
Citation: Campbell, J.F., Wraight, S.P. 2007. Experimental design: statistical considerations and analysis. In: L.A. Lacey and H.K. Kaya, editors. Field Manual of Techniques in Invertebrate Pathology. Dordrecht, The Netherlands. Springer. p.37-69.

Technical Abstract: In this book chapter, information on how field experiments in invertebrate pathology are designed and the data collected, analyzed, and interpreted is presented. The practical and statistical issues that need to be considered and the rationale and assumptions behind different designs or procedures are given, rather than the nuts-and-bolts of specific types of analysis. Statistical approaches for comparing two or more treatments and determining and comparing trends are presented. Issues dealing with experimental design are discussed; including the selection of experimental treatments, methods of sampling, selection of experimental units, and determining the amount of replication. A number of experimental designs are presented and some of the issues associated with their use are discussed. Some approaches to data analysis and presentation are also included, including dealing with missing data and outliers.

Last Modified: 9/20/2014
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