R

Useful Functions

• .cor(x,y,method="pearson")
  • default method = pearson
    • other methods: “spearman” and “kendall”
• .aggregate(x~y, data=, FUN=summary)
  • splits data into subsets, computes summary statistics for each, returns result in a convenient form
  • x grouped by y
    • x: var you want to summarise
    • y: grouping var
  • summary gives Min, Q1, Median, Mean, 3Q, Max