HMI 7530– Programming in R Introduction Jennifer Lewis Priestley, Ph.D. Kennesaw State University 1

Introduction to R Website and Syllabus My expectations of you Your expectations of the class Brief review 2 2 2

Introduction to R R is available at the following website: https://cran.revolutionanalytics.com/ I will be using R Studio. https://www.rstudio.com/

There is an introduction to R available on the CRAN R-project website. http://cran.r-project.org/doc/manuals/R- intro.pdf I recommend downloading this document and getting acquainted with it. 4

Introduction to R 5 5 Data Management Install and update R and associated add-on packages. Perform basic object-oriented computing using vectors, factors, matrices, data frames and arrays. Import and export data into and from R using various data file protocols. Perform basic data management tasks including recoding variables, converting data types, merging data, etc. Statistical Analysis Execute simple univariate and bivariate tests, including ttests, ANOVA, correlation, chi square. Execute simple multivariate regression models. Create simple data visualizations including Histograms, Boxplots, Barcharts, Pie Charts. Social Media Analysis Access and scrape Twitter to find trends by topic and by location. Execute basic Text Analysis. Missing Values have not been reported. For each Category: Outside = 344 (5.9% of total) Inside = 665 (11.47%) Out of bed = 659 (11.36%) Eating = 402 (6.93%) Bathing = 321 (5.54%) Toileting = 649 (11.19%) Dressing = 522 (9.00%) 5 5

Introduction to R Notes about assignments: Hands On Exercises Practice only – no grade – work together Homeworks Graded – feel free to work together but everyone turns in their own assignment Final Project (take home) Graded – you can study together…but everyone will turn in their own project. 6