Data visualization is as much a part of the data processing step as the data presentation step. It is much easier to compare plotted values than to compare numerical values. By visualizing data we can get a better intuitive sense of the data than would be possible by looking at tables of values alone. Additionally, visualizations can bring to light hidden patterns in data, that you, the analyst, can use for model selection.
The concept map for this chapter can be found in Figure A.3.
Explain why visualizing data is important
Create various statistical plots for exploratory data analysis
Use plotting functions from the
Identify when to use univariate, bivariate, ...