Exploring Anscombe

In 1973, Francis Anscombe famously created four datasets with remarkably similar numerical properties, but obviously different graphic relationships. The Anscombe dataset contains the x and y coordinates for these four datasets, along with a grouping variable, set, that distinguishes the quartet.

It may be helpful to remind yourself of the graphic relationship by viewing the four scatterplots:

ggplot(data = Anscombe, aes(x = x, y = y)) +
  geom_point() +
  facet_wrap(~ set)

For each of the four sets of data points in the Anscombe dataset, compute the following in the order specified. Names are provided in your call to summarize().

Number of observations, N
Mean of x
Standard deviation of x
Mean of y
Standard deviation of y
Correlation coefficient between x and y

Exercise

Exploring Anscombe

Instructions