Scatterplots for multiple pairs of data

Grouped barchart: for a single period, there are as many bars as time series
Stacked bar chart: for each period, there is a single bar, and each time series is represented by a portion of the bar proportional to the value of the time series at this date (i.e. the total at each period adds up to 100%)

In the previous exercise, you saw a numerical representation of the relationship between pairs of data through a correlation matrix. It's also possible to have a graphical representation of those relationships using scatterplots.

Specifically, the relationship between pairs() of time series is represented by a facetted scatterplot of all pairs at once. This is very convenient for a quick comparison betwen pairs of time series.

In this exercise, you will draw scatterplots of the stock data in my_data from the previous exercise.

Instructions

100 XP

Draw the scatterplots for all possible pairs in my_data
Remove the lower triangle of the scatterplot matrix by setting the lower.panel argument to NULL

Take Hint (-30 XP)