R programs:

• creativity.r Read a csv file, summary statistics, basic plots (histogram, boxplot, dotplot) using base graphics.
• creativity.r but using tidyverse commands and ggplot2 graphics
• creativity2.r Read a txt file, do a randomization test
• creativity3.r Do a t-test, computed pooled sd
• Tquantile.r Compute probabilities and quantiles for T distributions