Statistical Methods in Agriculture and Experimental Biology,Third Edition / Edition 3

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Overview

The third edition of this popular introductory text maintains the character that won worldwide respect for its predecessors but features a number of enhancements that broaden its scope, increase its utility, and bring the treatment thoroughly up to date. It provides complete coverage of the statistical ideas and methods essential to students in agriculture or experimental biology. In addition to covering fundamental methodology, this treatment also includes more advanced topics that the authors believe help develop an appreciation of the breadth of statistical methodology now available. The emphasis is not on mathematical detail, but on ensuring students understand why and when various methods should be used.

New in the Third Edition:

  • A chapter on the two simplest yet most important methods of multivariate analysis
  • Increased emphasis on modern computer applications
  • Discussions on a wider range of data types and the graphical display of data
  • Analysis of mixed cropping experiments and on-farm experiments

The third edition of this popular introductory text maintains the character that won worldwide respect for its predecessors but features a number of enhancements that broaden its scope, increase its utility, and bring the treatment thoroughly up to date. It provides complete coverage of the statistical ideas and methods essential to students in agriculture or experimental biology. In addition to covering fundamental methodology, this treatment also includes more advanced topics that the authors believe help develop an appreciation of the breadth of statistical methodology now available. The emphasis is not on mathematical detail, but on ensuring students understand why and when various methods should be used.New in the Third Edition:·A chapter on the two simplest yet most important methods of multivariate analysis·Increased emphasis on modern computer applications ·Discussions on a wider range of data types and the graphical display of data·Analysis of mixed cropping experiments and on-farm experiments

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Editorial Reviews

From The Critics
The third edition of this introductory text on statistical ideas and methods in agriculture and experimental biology offers treatment of more advanced topics, with two new chapters on methods of multivariate analysis, increased emphasis on modern computer applications and the graphical display of data, discussion of a wider range of data types, and analysis of mixed cropping experiments and on-farm experiments. Emphasis is not on mathematical detail, but on understanding why and when various methods should be used. The authors are retired from the School of Applied Statistics at the University of Reading, UK. Annotation c. Book News, Inc., Portland, OR
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Product Details

  • ISBN-13: 9781584881872
  • Publisher: Taylor & Francis
  • Publication date: 8/28/2002
  • Series: Texts in Statistical Science Series
  • Edition description: REV
  • Edition number: 3
  • Pages: 488
  • Product dimensions: 5.90 (w) x 9.10 (h) x 1.00 (d)

Table of Contents

INTRODUCTION
The Need for Statistics
Types of Data
The Use of Computers in Statistics

PROBABILITY AND DISTRIBUTIONS
Probability
Populations and Samples
Means and Variances
The Normal Distribution
Sampling Distributions

ESTIMATION AND HYPOTHESIS TESTING
Estimation of the Population Mean
Testing Hypotheses about the Population Mean
Population Variance Unknown
Comparison of Samples
A Pooled Estimate of Variance

A SIMPLE EXPERIMENT
Randomization and Replication
Analysis of a Completely Randomized Design with Two Treatments
A Completely Randomized Design with Several Treatments
Testing Overall Variation Between the Treatments

CONTROL OF RANDOM VARIATION BY BLOCKING
Local Control of Variation
Analysis of a Randomized Block Design
Meaning of the Error Mean Square
Latin Square Designs
Multiple Latin Squares Design
The Benefit of Blocking and the Use of Natural Blocks

PARTICULAR QUESTIONS ABOUT TREATMENTS
Treatment Structure
Treatment Contrasts
Factorial Treatment Structure
Main Effects and Interactions
Analysis of Variance for a Two-Factor Experiment
Partial Factorial Structure
Comparing Treatment Means - Are Multiple Comparison Methods Helpful?

MORE ON FACTORIAL TREATMENT STRUCTURE
More than Two Factors
Factors with Two Levels
The Double Benefit of Factorial Structure
Many Factors and Small Blocks
The Analysis of Confounded Experiments
Split Plot Experiments
Analysis of a Split Plot Experiment
Experiments Repeated at Different Sites

THE ASSUMPTIONS BEHIND THE ANALYSIS
Our Assumptions
Normality
Variance Homogeneity
Additivity
Transformations of Data for Theoretical Reasons
A More General Form of Analysis
Empirical Detection of the Failure of Assumptions and Selection of Appropriate Transformations
Practice and Presentation

STUDYING LINEAR RELATIONSHIPS
Linear Regression
Assessing the Regression Line
Inferences about the Slope of a Line
Prediction Using a Regression Line
Correlation
Testing Whether the Regression is Linear
Regression Analysis Using Computer Packages

MORE COMPLEX RELATIONSHIPS
Making the Crooked Straight
Two Independent Variables
Testing the Components of a Multiple Relationship
Multiple Regression
Possible Problems in Computer Multiple Regression

LINEAR MODELS
The Use of Models
Models for Factors and Variables
Comparison of Regressions
Fitting Parallel Lines
Covariance Analysis
Regression in the Analysis of Treatment Variation

NONLINEAR MODELS
Advantages of Linear and Nonlinear Models
Fitting Nonlinear Models to Data
Inferences about Nonlinear Parameters
Exponential Models
Inverse Polynomial Models
Logistic Models for Growth Curves

THE ANALYSIS OF PROPORTIONS
Data in the Form of Frequencies
The 2 × 2 Contingency Table
More than Two Situations or More than Two Outcomes
General Contingency Tables
Estimation of Proportions
Sample Sizes for Estimating Proportions

MODELS AND DISTRIBUTIONS FOR FREQUENCY DATA
Models for Frequency Data
Testing the Agreement of Frequency Data with Simple Models
Investigating More Complex Models
The Binomial Distribution
The Poisson Distribution
Generalized Models for Analyzing Experimental Data
Log-Linear Models
Logit Analysis of Response Data

MAKING AND ANALYZING SEVERAL EXPERIMENTAL MEASUREMENTS
Different Measurements on the Same Units
Interdependence of Different Variables
Repeated Measurements
Joint (Bivariate) Analysis
Indices of Combined Yield
Investigating Relationships with Experimental Data

ANALYZING AND SUMMARIZING MANY MEASUREMENTS
Introduction to Multivariate Data
Principal Component Analysis
Covariance or Correlation Matrix
Cluster Analysis
Similarity and Dissimilarity Measures
Hierarchical Clustering
Comparison of PCA and Cluster Analysis

CHOOSING THE MOST APPROPRIATE EXPERIMENTAL DESIGN
The Components of Design; Units and Treatments
Replication and Precision
Different Levels of Variation and Within-Unit Replication
Variance Components and Split Plot Designs
Randomization
Managing with Limited Resources
Factors with Quantitative Levels
Screening and Selection
On-Farm Experiments

SAMPLING FINITE POPULATIONS
Experiments and Sample Surveys
Simple Random Sampling
Stratified Random Sampling
Cluster Sampling, Multistage Sampling and
Sampling Proportional to Size
Ratio and Regression Estimates

REFERENCES
APPENDIX
INDEX

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