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How can you use programming to make sense of large amounts of data, and apply those insights to guide real world actions? Learn how to use dictionaries to organize your data into key-value pairs for easy lookup. Consider the tradeoffs of different nested data structures as you interpret everyday datasets. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now with our Intro to Computer Science - Python course! Course link: https://www.khanacademy.org/computing... Course playlist: • Intro to Computer Science - Python | Khan ... Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?ut... Volunteer here: https://www.khanacademy.org/contribut... TIMESTAMPS: 00:00 : datasets & data structures 03:45 : dictionary keys & values 08:08 : dictionary hashing 13:26 : dictionary iteration 18:53 : program design - bakery inventory 25:18 : data modeling & APIs 29:36 : nested data access 35:30 : program design - first responders