Try out the following exercises to revise the concepts learned so far:
- Look at the documentation on cor with
help("cor").
You can see, in addition to"pearson"
and"spearman"
, there is an option for"kendall"
. Learn about Kendall's tau. Why, and under what conditions, is it considered better than Spearman's rho? - For each species of iris, find the correlation coefficient between the sepal length and width. Are there any differences? How did we just combine two different types of the broad categories of bivariate analyses to perform a complex multivariate analysis?
- Download a dataset from the web, or find another built-into-R dataset that suits your fancy (using
library(help = "datasets")
). Explore relationships between the variables that you think might have some connection. - Gustave Flaubert is well understood to be a classist misogynist and this, of course, influenced how he developed the character of Emma Bovary. However, it is not uncommon for the readers to identify and empathize...