Download or read book Cause and Correlation in Biology written by Bill Shipley and published by Cambridge University Press. This book was released on 2002-08 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book goes beyond the truism that 'correlation does not imply causation' and explores the logical and methodological relationships between correlation and causation. It presents a series of statistical methods that can test, and potentially discover, cause-effect relationships between variables in situations in which it is not possible to conduct randomised or experimentally controlled experiments. Many of these methods are quite new and most are generally unknown to biologists. In addition to describing how to conduct these statistical tests, the book also puts the methods into historical context and explains when they can and cannot justifiably be used to test or discover causal claims. Written in a conversational style that minimises technical jargon, the book is aimed at practising biologists and advanced students, and assumes only a very basic knowledge of introductory statistics.

Download or read book The Encyclopedia of Research Methods in Criminology and Criminal Justice 2 Volume Set written by J. C. Barnes and published by John Wiley & Sons. This book was released on 2021-09-08 with total page 967 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of RESEARCH METHODS IN CRIMINOLOGY & CRIMINAL JUSTICE The most comprehensive reference work on research designs and methods in criminology and criminal justice This Encyclopedia of Research Methods in Criminology and Criminal Justice offers a comprehensive survey of research methodologies and statistical techniques that are popular in criminology and criminal justice systems across the globe. With contributions from leading scholars and practitioners in the field, it offers a clear insight into the techniques that are currently in use to answer the pressing questions in criminology and criminal justice. The Encyclopedia contains essential information from a diverse pool of authors about research designs grounded in both qualitative and quantitative approaches. It includes information on popular datasets and leading resources of government statistics. In addition, the contributors cover a wide range of topics such as: the most current research on the link between guns and crime, rational choice theory, and the use of technology like geospatial mapping as a crime reduction tool. This invaluable reference work: Offers a comprehensive survey of international research designs, methods, and statistical techniques Includes contributions from leading figures in the field Contains data on criminology and criminal justice from Cambridge to Chicago Presents information on capital punishment, domestic violence, crime science, and much more Helps us to better understand, explain, and prevent crime Written for undergraduate students, graduate students, and researchers, The Encyclopedia of Research Methods in Criminology and Criminal Justice is the first reference work of its kind to offer a comprehensive review of this important topic.

Download or read book Encyclopedia of Research Design written by Neil J. Salkind and published by SAGE. This book was released on 2010-06-22 with total page 1779 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Comprising more than 500 entries, the Encyclopedia of Research Design explains how to make decisions about research design, undertake research projects in an ethical manner, interpret and draw valid inferences from data, and evaluate experiment design strategies and results. Two additional features carry this encyclopedia far above other works in the field: bibliographic entries devoted to significant articles in the history of research design and reviews of contemporary tools, such as software and statistical procedures, used to analyze results. It covers the spectrum of research design strategies, from material presented in introductory classes to topics necessary in graduate research; it addresses cross- and multidisciplinary research needs, with many examples drawn from the social and behavioral sciences, neurosciences, and biomedical and life sciences; it provides summaries of advantages and disadvantages of often-used strategies; and it uses hundreds of sample tables, figures, and equations based on real-life cases."--Publisher's description.

Download or read book Correlation and Path Analysis written by Anuradha Batana and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation on correction and path analysis in redgram was carried to elicit the information on nature and extent of the genetic variability, heritability, genetic advance, character association and path analysis. Observations were recorded on thirteen characters. The analysis of variance indicated significant difference among the genotypes for all the 13 characters studied. The genotypic coefficient of variation for all the characters studied were lesser than the phenotypic coefficient of variation indicating masking effects of the environment. Character association studies and Path coefficient analysis revealed significant and positive correlation of seed yield per plant with number of secondary branches per plant, number of pods per plant, dry matter content per plant and harvest index and simultaneous improvement of these characters along with seed yield is possible.

Download or read book Path Analysis written by Ching Chun Li and published by . This book was released on 1975 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basics of Structural Equation Modeling written by Geoffrey M. Maruyama and published by SAGE Publications. This book was released on 1997-09-22 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the availability of software programs such as LISREL, EQS, and AMOS modeling techniques have become a popular tool for formalized presentation of the hypothesized relationships underlying correlational research and for testing the plausibility of hypothesizing for a particular data set. The popularity of these techniques, however, has often led to misunderstandings of them, particularly by students being exposed to them for the first time. Through the use of careful narrative explanation, Basics of Structural Equation Modeling describes the logic underlying structural equation modeling (SEM) approaches, describes how SEM approaches relate to techniques like regression and factor analysis, analyzes the strengths and shortcomings of SEM as compared to alternative methodologies, and explores the various methodologies for analyzing structural equation data.

Download or read book Path Analysis Data Analysis Application written by Jonathan Sarwono and published by . This book was released on 2017-10-12 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Path analysis, developed by Sewell Wright, models association between variables that are observed sequentially with the aim of parsing a correlation model into the direct and indirect relationship model. Where in the path analysis, a correlation coefficient is used to measure the association between independent variables also called as exogenous variables in the context of path analysis. Standardized regression coefficient ( β) is used as regression weight to measure the relationship between an independent (exogenous) variable and a dependent (endogenous) variable within a particular path diagram which is then referred to as a path coefficient from exogenous to endogenous variables.In this book, the writer discusses about Path Analysis application used for research data analysis. It starts with the theory, models and its application for the research in Economics. Path Analysis can accommodate more than one variables that will be studied by researchers. Advantages of using Path Analysis are: a) more than one independent and dependent variables can be used at the same time; b) direct and indirect effects can be calculated simultaneously; c) an intervening variable can be put in the model; correlation among the independent variables can be calculated; and complex relationship among the variables studied can be arranged in sequences. To make easy the readers, the calculation of the data analysis will be assisted using IBM SPSS and Stata, two of the prominent statistical calculation tools at present. In this book, the writer will explain several models in Path Analysis, namely 1)A Multiple Linear Regression Model, 2) A Mediation Model, 3)A Joint Multiple Linear Regression and Mediation Model, 4) A Complex Model. The data that will be used in the model are primary data and secondary one. It will also be discussed when the data are time series and cross - section data or the mixed one between time series and cross - section data which is called panel data. The calculation tools used are IBM SPSS and Stata software. Besides the theory of Path Analysis, the writer discusses the application of this analysis procedure in real research contexts as well. The data used as samples are taken from real data from the field. Accordingly, this book is very useful for both undergraduate and graduate students who are taking their thesis researches. The contents of the book are as follows:a) Path Analysis Definitions and Basic Conceptsb) Path Analysis Basic Assumptionsc) Requirements of Using the Path Analysisd) Path Analysis Modelse) First Model Application: A Multiple Regression Modelf) Second Model Application: A Mediation Modelg) Third Model Application: A Joint Multiple Regression and Mediation Modelh) Fourth Model Application: A Complex Modeli) Path Analysis Using Panel Dataj) Application in Thesis Researchk) ExercisesThe calculation of the data used in the books can be downloaded in the writer's web: www.jonathansarwono.info/pa_amazon.html

Download or read book Elements Of Bio Metrical Genetics revised And Enlarged Edition written by A.R. Dabholkar and published by Concept Publishing Company. This book was released on 1999 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Procedures for Agricultural Research written by Kwanchai A. Gomez and published by John Wiley & Sons. This book was released on 1984-02-17 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here in one easy-to-understand volume are the statistical procedures and techniques the agricultural researcher needs to know in order to design, implement, analyze, and interpret the results of most experiments with crops. Designed specifically for the non-statistician, this valuable guide focuses on the practical problems of the field researcher. Throughout, it emphasizes the use of statistics as a tool of research—one that will help pinpoint research problems and select remedial measures. Whenever possible, mathematical formulations and statistical jargon are avoided. Originally published by the International Rice Research Institute, this widely respected guide has been totally updated and much expanded in this Second Edition. It now features new chapters on the analysis of multi-observation data and experiments conducted over time and space. Also included is a chapter on experiments in farmers' fields, a subject of major concern in developing countries where agricultural research is commonly conducted outside experiment stations. Statistical Procedures for Agricultural Research, Second Edition will prove equally useful to students and professional researchers in all agricultural and biological disciplines. A wealth of examples of actual experiments help readers to choose the statistical method best suited for their needs, and enable even the most complicated procedures to be easily understood and directly applied. An International Rice Research Institute Book

Download or read book A User s Guide to Path Analysis written by Moses E. Olobatuyi and published by University Press of America. This book was released on 2006 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for graduate level students in advanced statistics, this handbook offers a comprehensive and practical overview of path analysis complete with: definition and graphical illustrations of basic terms and concepts; illustration of causal diagrams; in-depth discussion of assumptions underlying path analysis; discussion and illustration of causal model estimation; practical research questions for interpreting a path model; and instructions on how to read a path diagram and use the SPSS computer program.

Download or read book Correlation and Causality written by David A. Kenny and published by John Wiley & Sons. This book was released on 1979 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural modeling; Covariance algebra; Principles of path analysis; Models with observed variables as causes; Measurement error in the exogenous variable and third variables; Observed variables as causes of each other; Single unmeasured exogenous variables; Causal models with multiple unmeasured variables; Causal models with unmeasured variables; Causal models and true experiments; The nonequivalent control group design; Cross-lagged panel correlation; Loose ends.

Download or read book Path Analysis written by C. C. Li and published by . This book was released on 1981 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identities and equations. Linear regression and correlation. Multiple regression and correlation. Standardized variables: path coefficients. Path analysis of causal systems. Elements of population genetics. Quantitative traits: heritability. Inbreeding and assortative mating. Applications in bio-social sciences.

Download or read book Logistic Regression written by Scott W. Menard and published by SAGE. This book was released on 2010 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Logistic Regression is designed for readers who have a background in statistics at least up to multiple linear regression, who want to analyze dichotomous, nominal, and ordinal dependent variables cross-sectionally and longitudinally.

Download or read book PDQ Statistics written by Geoffrey R. Norman and published by PMPH USA. This book was released on 2003-01-01 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of PDQ Statistics provides an overview of all major statistical methods, giving the reader a good understanding of statistics and how they are used in research articles. It covers the major categories – variable and descriptive statistics, parametric statistics, non-parametric statistics, and multivariate statistics. The explanations are clear, succinct, and loaded with practical examples.

Download or read book Meta Analysis written by Mike W.-L. Cheung and published by John Wiley & Sons. This book was released on 2015-05-06 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a novel approach to conducting meta-analysis using structural equation modeling. Structural equation modeling (SEM) and meta-analysis are two powerful statistical methods in the educational, social, behavioral, and medical sciences. They are often treated as two unrelated topics in the literature. This book presents a unified framework on analyzing meta-analytic data within the SEM framework, and illustrates how to conduct meta-analysis using the metaSEM package in the R statistical environment. Meta-Analysis: A Structural Equation Modeling Approach begins by introducing the importance of SEM and meta-analysis in answering research questions. Key ideas in meta-analysis and SEM are briefly reviewed, and various meta-analytic models are then introduced and linked to the SEM framework. Fixed-, random-, and mixed-effects models in univariate and multivariate meta-analyses, three-level meta-analysis, and meta-analytic structural equation modeling, are introduced. Advanced topics, such as using restricted maximum likelihood estimation method and handling missing covariates, are also covered. Readers will learn a single framework to apply both meta-analysis and SEM. Examples in R and in Mplus are included. This book will be a valuable resource for statistical and academic researchers and graduate students carrying out meta-analyses, and will also be useful to researchers and statisticians using SEM in biostatistics. Basic knowledge of either SEM or meta-analysis will be helpful in understanding the materials in this book.

Download or read book Maximal Correlation in Path Analysis written by Polska Akademia Nauk. Instytut Podstaw Informatyki and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cause and Correlation in Biology written by Bill Shipley and published by Cambridge University Press. This book was released on 2016-04-18 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many problems in biology require an understanding of the relationships among variables in a multivariate causal context. Exploring such cause-effect relationships through a series of statistical methods, this book explains how to test causal hypotheses when randomised experiments cannot be performed. This completely revised and updated edition features detailed explanations for carrying out statistical methods using the popular and freely available R statistical language. Sections on d-sep tests, latent constructs that are common in biology, missing values, phylogenetic constraints, and multilevel models are also an important feature of this new edition. Written for biologists and using a minimum of statistical jargon, the concept of testing multivariate causal hypotheses using structural equations and path analysis is demystified. Assuming only a basic understanding of statistical analysis, this new edition is a valuable resource for both students and practising biologists.