classnotes 1. chpt1. basic vectors-declaring, accessing, altering,View, table, pie, barplot

classnotes 2 . chpt 1 summary: R code: hist, stem, plot, str, knitting

class notes: more graphs chpt 1. Summary: loading a file in an rmarkdown; restricting the dataset based on values of a variable; histograms; filter; stacked histogram

Classnotes4. chpt2. Summary, mean, sd, median, fivenum, boxplot, IQR, side-by-side boxplots