Numerical data: Programming exercises
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Take some time to complete the following exercises to practice what you've
learned in
First steps with numerical data.
- Get statistics on a dataset,
which shows you how to find columns containing blatant outliers:
- Find the bad part of the dataset,
which guides you through visual and mathematical ways to find hidden bad
values in a dataset:
Programming exercises run directly in your browser (no setup
required!) using the Colaboratory
platform. Colaboratory is supported on most major browsers, and is most
thoroughly tested on desktop versions of Chrome and Firefox.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-25 UTC.
[null,null,["Last updated 2025-08-25 UTC."],[[["\u003cp\u003eThis page provides programming exercises focusing on practicing numerical data analysis skills learned in a previous lesson.\u003c/p\u003e\n"],["\u003cp\u003eTwo Colab exercises are available: one on calculating descriptive statistics and identifying outliers, and another on detecting and handling bad data values in a dataset.\u003c/p\u003e\n"],["\u003cp\u003eThe exercises are browser-based and require no setup, utilizing the Colaboratory platform, primarily supported on Chrome and Firefox desktop versions.\u003c/p\u003e\n"]]],[],null,["# Numerical data: Programming exercises\n\nTake some time to complete the following exercises to practice what you've\nlearned in\n[First steps with numerical data](/machine-learning/crash-course/numerical-data/first-steps).\n\n- **Get statistics on a dataset** , which shows you how to find columns containing blatant outliers: \n [Open math statistics exercise](https://colab.research.google.com/github/google/eng-edu/blob/main/ml/cc/exercises/numerical_data_stats.ipynb?utm_source=mlcc&utm_campaign=colab-external&utm_medium=referral&utm_content=numerical_data_stats)\n- **Find the bad part of the dataset** , which guides you through visual and mathematical ways to find hidden *bad* values in a dataset: \n [Open \"bad part\" dataset exercise](https://colab.research.google.com/github/google/eng-edu/blob/main/ml/cc/exercises/numerical_data_bad_values.ipynb?utm_source=mlcc&utm_campaign=colab-external&utm_medium=referral&utm_content=numerical_data_bad_values)\n\nProgramming exercises run directly in your browser (no setup\nrequired!) using the [Colaboratory](https://colab.research.google.com)\nplatform. Colaboratory is supported on most major browsers, and is most\nthoroughly tested on desktop versions of Chrome and Firefox. \n[Help Center](https://support.google.com/machinelearningeducation)"]]