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Rasch Measurement Theory Analysis in R
  • Language: en
  • Pages: 327

Rasch Measurement Theory Analysis in R

  • Type: Book
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  • Published: 2022-06-07
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  • Publisher: CRC Press

Rasch Measurement Theory Analysis in R provides researchers and practitioners with a step-by-step guide for conducting Rasch measurement theory analyses using R. It includes theoretical introductions to major Rasch measurement principles and techniques, demonstrations of analyses using several R packages that contain Rasch measurement functions, and sample interpretations of results. Features: Accessible to users with relatively little experience with R programming Reproducible data analysis examples that can be modified to accommodate users’ own data Accompanying e-book website with links to additional resources and R code updates as needed Features dichotomous and polytomous (rating scal...

Exploring Rating Scale Functioning for Survey Research
  • Language: en
  • Pages: 159

Exploring Rating Scale Functioning for Survey Research

Items with ordered response categories are common in survey research, such as when respondents are asked how much they agree with certain statements. But how large are the differences between categories of response, and how well do they distinguish between respondents? This volume is the first to introduce the evaluation of rating scales to an audience of survey researchers. Evaluating Rating Scale Functioning for Survey Research provides researchers with an overview of rating scale analysis along with practical guidance on how to conduct such analyses with their own survey data. Author Stefanie A. Wind presents three categories of methods: Rasch models; non-Rasch Item Response Theory (IRT) models; and non-parametric models, together with practical examples. Tutorials, datasets, and software code (R and Facets) to accompany the book are available on the book’s website.

Invariant Measurement with Raters and Rating Scales
  • Language: en
  • Pages: 352

Invariant Measurement with Raters and Rating Scales

  • Type: Book
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  • Published: 2017-12-15
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  • Publisher: Routledge

The purpose of this book is to present methods for developing, evaluating and maintaining rater-mediated assessment systems. Rater-mediated assessments involve ratings that are assigned by raters to persons responding to constructed-response items (e.g., written essays and teacher portfolios) and other types of performance assessments. This book addresses the following topics: (1) introduction to the principles of invariant measurement, (2) application of the principles of invariant measurement to rater-mediated assessments, (3) description of the lens model for rater judgments, (4) integration of principles of invariant measurement with the lens model of cognitive processes of raters, (5) i...

Rasch Measurement Theory Analysis in R
  • Language: en
  • Pages: 323

Rasch Measurement Theory Analysis in R

  • Type: Book
  • -
  • Published: 2022-06-07
  • -
  • Publisher: CRC Press

Rasch Measurement Theory Analysis in R provides researchers and practitioners with a step-by-step guide for conducting Rasch measurement theory analyses using R. It includes theoretical introductions to major Rasch measurement principles and techniques, demonstrations of analyses using several R packages that contain Rasch measurement functions, and sample interpretations of results. Features: Accessible to users with relatively little experience with R programming Reproducible data analysis examples that can be modified to accommodate users’ own data Accompanying e-book website with links to additional resources and R code updates as needed Features dichotomous and polytomous (rating scal...

Secrets on the Wind
  • Language: en

Secrets on the Wind

Deep in Lakota Souix territory in 1878, a torched farmstead is discovered by American soldiers. Hiding in the cellar is Laina Gray--delirious and pregnant. Laina is slowly nursed back to health by Granny Max, a woman who trusts God's healing hand. While Laina recovers physically, her faith is also restored just as she needs it most. She is torn between two men--the sergeant who rescued her, and a man from her past who knows her closely guarded secrets.

Chasing the Wind
  • Language: en
  • Pages: 68

Chasing the Wind

Short Stories of Love and Loss and Mostly Happy Endings.

Simulation of Power System with Renewables
  • Language: en
  • Pages: 268

Simulation of Power System with Renewables

Simulation of Power System with Renewables provides details on the modelling and efficient implementation of MATLAB, particularly with a renewable energy driven power system. The book presents a step-by-step approach to modelling implementation, including all major components used in current power systems operation, giving the reader the opportunity to learn how to gather models for conventional generators, wind farms, solar plants and FACTS control devices. Users will find this to be a central resource for modelling, building and simulating renewable power systems, including discussions on its limitations, assumptions on the model, and the implementation and analysis of the system. Presents worked examples and equations in each chapter that address system limitations and flexibility Provides step-by-step guidance for building and simulating models with required data Contains case studies on a number of devices, including FACTS, and renewable generation

Are You Sure?
  • Language: en
  • Pages: 88

Are You Sure?

Are You Sure? is a case of shifting realities. How much is happening, how much isn't? Does David want to kill Caroline? Does Charlie want to kill David? Does Caroline want to kill everyone?

A Criminologist's Guide to R
  • Language: en
  • Pages: 415

A Criminologist's Guide to R

  • Type: Book
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  • Published: 2022-12-15
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  • Publisher: CRC Press

A Criminologist's Guide to R: Crime by the Numbers introduces the programming language R and covers the necessary skills to conduct quantitative research in criminology. By the end of this book, a person without any prior programming experience can take raw crime data, be able to clean it, visualize the data, present it using R Markdown, and change it to a format ready for analysis. A Criminologist's Guide to R focuses on skills specifically for criminology such as spatial joins, mapping, and scraping data from PDFs, however any social scientist looking for an introduction to R for data analysis will find this useful. Key Features: Introduction to RStudio including how to change user preference settings. Basic data exploration and cleaning – subsetting, loading data, regular expressions, aggregating data. Graphing with ggplot2. How to make maps (hotspot maps, choropleth maps, interactive maps). Webscraping and PDF scraping. Project management – how to prepare for a project, how to decide which projects to do, best ways to collaborate with people, how to store your code (using git), and how to test your code.

Spatial Sampling with R
  • Language: en
  • Pages: 549

Spatial Sampling with R

  • Type: Book
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  • Published: 2022-09-26
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  • Publisher: CRC Press

Scientific research often starts with data collection. However, many researchers pay insufficient attention to this first step in their research. The author, researcher at Wageningen University and Research, often had to conclude that the data collected by fellow researchers were suboptimal, or in some cases even unsuitable for their aim. One reason is that sampling is frequently overlooked in statistics courses. Another reason is the lack of practical textbooks on sampling. Numerous books have been published on the statistical analysis and modelling of data using R, but to date no book has been published in this series on how these data can best be collected. This book fills this gap. Spati...