Profile Picture for Ryan Straight

Ryan Straight

9X9X25 Challenge, Extender Blogs

Introduction to Statistics

Learning Objectives for Introduction to Inferential and Descriptive Statistics These are the learning objectives for this portion of the class: Give examples of how statistics can lend credibility to an argument Distinguish between descriptive statistics and inferential statistics Distinguish between a sample and a population Distinguish between simple random sampling and stratified sampling Distinguish between random sampling and random assignment Define and distinguish between independent and dependent variables Define and distinguish between discrete and continuous variables Define and distinguish between […]

more...

9X9X25 Challenge, Extender Blogs

R and RStudio

We’re using an incredibly powerful statistical software package in this class (in fact, this entire course site is built using it). Unfortunately, it does come with a bit of a learning curve. You won’t be required to learn the nitty-gritty ins and outs of the R scripting language but you will need to know the basics of what R can do. Luckily, we have RStudio to really help out with that. Below are some introductory articles and videos. Download R […]

more...

9X9X25 Challenge, Extender Blogs

Activity B

Activity B Description This activity explores correlation and to learn how to create a scatterplot using R. The Data Using content from this website (note that we’re using RStudio, not Excel), here is the context for this activity: A researcher was interested in whether there was an association between communication skills and quality of peer relationships in third grade classrooms. Teachers in each class completed a communicative skills checklist and a rating scale of peer relations for each child. The […]

more...