The primary website for this course is https://faculty.bard.edu/~jdainerbest/psy-203
These are all of the instructions for Lab 4. The list of labs is here.
This github repository contains R lab code for labs in Bard College's Fall 2020 for Statistics for Psychology, taught by Prof. Justin Dainer-Best.
For each lab, you should expect to download the lab's files locally to your computer or RStudio.Cloud installation, and run them there.
Below are instructions for Lab 4.
The following lab explores the ideas of hypothesis-testing as explored in the initial classes, using examples from z-scores to continue experimenting with visualizations and continue exploring real data. You should have completed the initial three labs, have a base-level understanding of the goals and procedures of hypothesis-testing, and be ready to practice using R.
Set your working directory if necessary. Check that you're in the directory you expect by running getwd() in the Console. If you need more help, look at the wiki page on setting a working directory.
If you didn't complete the exercises on creating visualizations in R and RStudio, complete those first in Lab 3. Don't forget that you can upload the knitted output HTML file from the exercises to Brightspace for feedback.
Want some additional information on using ggplot2 in R? I recommend completing this primer from RStudio.
To download and then run the tutorial, run the following two commands. Please note: only run the usethis::usezip() line once! Running it again will result in your overwriting the files on your computer---potentially losing your work.
Additionally, please make sure to copy the whole lines, all the way to the closing parenthesis.
usethis::use_zip("https://github.com/jdbest/psy-203/raw/master/lab04.zip", cleanup = TRUE)
rmarkdown::run("lab04/hypothesis-testing.Rmd")
Once you've completed the tutorial, close it and double click on the hypothesis-testing-exercises.Rmd file in the folder you downloaded. (You may need to close the tutorial window.) To work on the exercises with the tutorial running, refer to the instructions on the wiki.
This exercise explores the commands you learned and lets you continue practicing the steps of hypothesis testing.
Double click on the file called hypothesis-testing-exercises.Rmd to open it, and follow the instructions.