Data visualization is a field that concerns the representation and presentation of data in the visual form. Such visualizations can reveal patterns, trends, and relationships in data, and there are many important guidelines about how to best represent and communicate data. While custom visualizations can be eye-catching and memorable, there a number of standard chart types that are commonly used to visualize data. Sometimes these charts are also known as plots (e.g. line plots) or graphs (e.g. bar graphs). In this courselet, we will explore different types of charts using the pyobsplot library.