# Introduction In data visualization, error bars are used to indicate the uncertainty or variability of data points. Matplotlib is a popular data visualization library in Python that provides built-in support for error bars. In this lab, we will learn how to create error bar plots in polar coordinates using Matplotlib. ## VM Tips After the VM startup is done, click the top left corner to switch to the **Notebook** tab to access Jupyter Notebook for practice. Sometimes, you may need to wait a few seconds for Jupyter Notebook to finish loading. The validation of operations cannot be automated because of limitations in Jupyter Notebook. If you face issues during learning, feel free to ask Labby. Provide feedback after the session, and we will promptly resolve the problem for you.
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