An Essential Reference for Intermediate and Advanced R Programmers Advanced R presents useful tools and techniques for attacking many types of R programming problems, helping you avoid mistakes and dead ends. With more than ten years of experience programming in R, the author illustrates the elegance, beauty, and flexibility at the heart of R. The book develops the necessary skills to produce quality code that can be used in a variety of circumstances. You will learn: The fundamentals of R, including standard data types and functions Functional programming as a useful framework for solving wide classes of problems The positives and negatives of metaprogramming How to write fast, memory-efficient code This book not only helps current R users become R programmers but also shows existing programmers what’s special about R. Intermediate R programmers can dive deeper into R and learn new strategies for solving diverse problems while programmers from other languages can learn the details of R and understand why R works the way it does.

Now includes Step 2 practice Questions and Answers, with explanations, for each chapter! Current, concise, and easy to use, the updated fifth edition of Step-Up to USMLE Step 2 CK makes essential information engaging and retainable, delivering the perfect exam prep for today’s busy medical student. Access just what you need to ace the USMLE Step 2 CK and make a confident transition to clinical practice with this high-yield, system-based review. This updated fifth edition of Step-Up to USMLE Step 2 CK helps you quickly memorize essential information and gives you the realistic test-taking practice to succeed. Full-color illustrations, “Quick Hits,” and mnemonics clarify must-know information on causes, risk factors, history and physical exam, lab studies and radiology, treatment, and complications for the most common diseases and disorders. USMLE-style study questions for each chapter mimic those found on the Step 2 exams, accompanied by complete explanations for maximum comprehension and test preparation.

An important addition to the popular Step-Up series, Step-Up to Emergency Medicine uses the proven series format to provide a high-yield review of emergency medicine, ideal for preparing for clerkships/clinical rotations, end of rotation/shelf exams, and the USMLE Step 2. Clinical pearls, full-color illustrations, and "Quick Hits" provide essential information in an efficient, easy-to-remember manner, perfect for medical, physician assistant, and nurse practitioner students. Step-Up to Emergency Medicine delivers exactly what you need to know--both for exam preparation and for practical use in the evaluation and treatment of patients in the emergency department. Succinct, outline approach focuses on the core content you need to know. "Quick Hits" in the margins highlight highly testable topics. Clinical pearls help you identify clinical connections for handy retrieval at test time, and aid in the transition from basic science to clinical medicine. More than 100 full-color photographs and line drawings illustrate key concepts throughout. Easy-to-follow algorithms show examples of effective clinical reasoning, particularly for similar complaints. Numerous charts, tables, graphs, and mnemonics facilitate easy retention of essential material. 100 online questions with complete rationale for correct and incorrect answers, help prepare you for exams and clinical practice. Coverage includes every essential area of emergency medicine, including psychiatric, pediatric, and environmental emergencies; trauma, wounds, toxicology, and medicolegal considerations-as well as must-know information on relevant pathophysiology, clinical features, differential diagnoses, patient evaluation, therapy, and more.

Learn how to use R to turn raw data into insight, knowledge, and understanding. This book introduces you to R, RStudio, and the tidyverse, a collection of R packages designed to work together to make data science fast, fluent, and fun. Suitable for readers with no previous programming experience, R for Data Science is designed to get you doing data science as quickly as possible. Authors Hadley Wickham and Garrett Grolemund guide you through the steps of importing, wrangling, exploring, and modeling your data and communicating the results. You'll get a complete, big-picture understanding of the data science cycle, along with basic tools you need to manage the details. Each section of the book is paired with exercises to help you practice what you've learned along the way. You'll learn how to: Wrangle—transform your datasets into a form convenient for analysis Program—learn powerful R tools for solving data problems with greater clarity and ease Explore—examine your data, generate hypotheses, and quickly test them Model—provide a low-dimensional summary that captures true "signals" in your dataset Communicate—learn R Markdown for integrating prose, code, and results

Step Up to the TOEFL®iBTis a skills-based textbook designed to address the needs of students who have not yet reached a language level to successfully prepare for the TOEFL® iBT. This volume does what no other textbook does: it helps intermediate-level students take a “step up” toward preparing themselves for the iBT by teaching and developing some of the grammar, vocabulary, and pronunciation skills necessary to do well on the test. Each of the eight units inStep Upaddresses one rhetorical function (ranging from chronology and sequences to developing ideas and paraphrasing) and includes: twoGrammar You Can Usetopics that strengthen students' receptive and productive language threeVocabulary You Needsections highlighting common language functions seen on the iBT twoSpeaking Clearlysections that focus on improving comprehensibility and fluent delivery skill-building exercises that practice a language point through high-interest reading, writing, listening, and speaking activities iBT practice exercises that focus on a language point in ways similar to those on the actual test (including the integrated speaking and writing tasks) but at this intermediate-level of competency Step Up Noteswith useful hints and tips about improving performance on the iBT

This book is a primary review tool to prepare students for both the internal medicine clerkship and the end-rotation NBME shelf examination. This logical alternative to several limited-focus books blends a bullet-outline format students prefer in a review book with comprehensive paragraphs, as needed, for optimal preparation. Illustrations, charts, tables, graphs, mnemonics, and "Quick Hits" pearls for the clerkship speed and supplement learning. Ample content without superfluous detail enables students to readily evaluate and expand their knowledge of cardiology, pulmonary medicine, gastroenterology, hematology, neurology, endocrinology, rheumatology, nephrology, genitourinary disorders, fluids and electrolytes, dermatology, and musculoskeletal problems. A new section in this Second Edition presents 100 USMLE-style clinical vignette-based questions with answers. A color insert contains over thirty full-color images. A companion Website will offer the fully searchable text and color photographs.

Designed to help with that tricky R sound, this workbook is a MUST HAVE for every speech-language pathologist! Professional illustrations teach students the anatomy of the mouth and detailed step-by-step visuals guide the clinician and student through a variety of techniques to elicit accurate productions. Activities are included for practice in isolation, syllables, words, sentences, and oral reading. Please email any questions to [email protected]

Doing Meta-Analysis with R: A Hands-On Guide serves as an accessible introduction on how meta-analyses can be conducted in R. Essential steps for meta-analysis are covered, including calculation and pooling of outcome measures, forest plots, heterogeneity diagnostics, subgroup analyses, meta-regression, methods to control for publication bias, risk of bias assessments and plotting tools. Advanced but highly relevant topics such as network meta-analysis, multi-three-level meta-analyses, Bayesian meta-analysis approaches and SEM meta-analysis are also covered. A companion R package, dmetar, is introduced at the beginning of the guide. It contains data sets and several helper functions for the meta and metafor package used in the guide. The programming and statistical background covered in the book are kept at a non-expert level, making the book widely accessible. Features • Contains two introductory chapters on how to set up an R environment and do basic imports/manipulations of meta-analysis data, including exercises • Describes statistical concepts clearly and concisely before applying them in R • Includes step-by-step guidance through the coding required to perform meta-analyses, and a companion R package for the book

The Book of R is a comprehensive, beginner-friendly guide to R, the world’s most popular programming language for statistical analysis. Even if you have no programming experience and little more than a grounding in the basics of mathematics, you’ll find everything you need to begin using R effectively for statistical analysis. You’ll start with the basics, like how to handle data and write simple programs, before moving on to more advanced topics, like producing statistical summaries of your data and performing statistical tests and modeling. You’ll even learn how to create impressive data visualizations with R’s basic graphics tools and contributed packages, like ggplot2 and ggvis, as well as interactive 3D visualizations using the rgl package. Dozens of hands-on exercises (with downloadable solutions) take you from theory to practice, as you learn: –The fundamentals of programming in R, including how to write data frames, create functions, and use variables, statements, and loops –Statistical concepts like exploratory data analysis, probabilities, hypothesis tests, and regression modeling, and how to execute them in R –How to access R’s thousands of functions, libraries, and data sets –How to draw valid and useful conclusions from your data –How to create publication-quality graphics of your results Combining detailed explanations with real-world examples and exercises, this book will provide you with a solid understanding of both statistics and the depth of R’s functionality. Make The Book of R your doorway into the growing world of data analysis.