1st Edition

Agricultural Statistical Data Analysis Using Stata

By George Boyhan Copyright 2013
    264 Pages 63 B/W Illustrations
    by CRC Press

    264 Pages
    by CRC Press

    Practical statistics is a powerful tool used frequently by agricultural researchers and graduate students involved in investigating experimental design and analysis. One of the most widely used statistical analysis software packages for this purpose is Stata. The Stata software program has matured into a user-friendly environment with a wide variety of statistical functions. Agricultural Statistical Data Analysis Using Stata introduces readers to the use of Stata to solve agricultural statistical problems.

    The book begins with an overview of statistical software and the Stata program. It explains the various windows and menus and describes how they are integrated. The next chapters explore data entry and importing as well as basic output formats and descriptive statistics. The author describes the ever-increasing design complexity and how this is implemented in the software. He reviews one of Stata’s strongest features, which is its programming ability. He also examines post hoc tests as well as Stata’s graphing capabilities. The final chapters provide information on regression analysis, data transformations, and the analyses of non-parametric data.

    Many agricultural researchers are unprepared for the statistics they will need to use in their profession. Written in an easy-to-read format with screen shots and illustrations, the book is suitable for a wide audience, including beginners in statistics who are new to Stata, as well as more advanced Stata users and those interested in more complex designs.

    General Statistical Packages Comparisons
    Program
    Windows and Menus
    What’s on the Menu?
    Data Entry
    Importing Data
    Manipulating Data and Formats
    Descriptive Statistics
    Output Formats
    Experimentation Ideas
    Two Sample Tests
    ANOVA
    Output and Meaning
    Variations of One Factor ANOVA Designs
    Randomized Complete Block Design
    Latin Square Designs
    Balanced Incomplete Block Designs
    Balanced Lattice Designs
    Group Balanced Block Design
    Subsampling
    Two and More Factors ANOVA
    Split-Plot Design
    Split-Block Design
    Evaluation over Years or Seasons
    Three Factor Design
    Split-Split Plot Design
    Covariance Analysis
    Programming Stata
    Post Hoc Tests
    Planned Comparisons
    Built-in Multiple Range Tests
    Programming Scheffé’s Test
    Preparing Graphs
    Graphing in Stata
    Correlation and Regression
    Correlation
    Linear Regression
    Data Transformations
    Binary, Ordinal, and Categorical Data Analysis
    References
    Appendix
    Index

    Biography

    George Boyhan, PhD, is a professor of horticulture and an extension vegetable specialist. He has worked for 15 years at the University of Georgia in this capacity and has conducted a wide variety of experiments requiring statistical analyses. Prior to this, he worked at Auburn University as a senior research associate, where he designed experiments, collected data, and analyzed results. Dr. Boyhan has worked with a wide variety of crops in his career. He currently studies the development of disease-resistant pumpkins, develops watermelon varieties for organic production, and evaluates sustainable production practices. Dr. Boyhan is an internationally recognized authority on vegetable production and has given presentations at a number of venues both in the United States and internationally. He has published two book chapters, over 40 referred publications, and many other publications on vegetable production and culture.