Statistical questions require collecting data with variability to answer. For example, asking about the average number of cars in a parking lot on Monday mornings is a statistical question. …

Statistics is about collecting, presenting, and analyzing data. Variability, a key concept in statistics, refers to how much data points differ from each other. Statistical questions require …

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Two-way tables, Venn diagrams, and probability Get 3 of 4 questions to level up!

Learn about mean, median, and mode with Khan Academy's comprehensive review of these fundamental concepts in statistics.

Learn a powerful collection of methods for working with data! AP®️ Statistics is all about collecting, displaying, summarizing, interpreting, and making inferences from data.

Ask a question. Form a hypothesis, or testable explanation. Make a prediction based on the hypothesis. Test the prediction. Iterate: use the results to make new hypotheses or predictions.

A statistics class at a large high school suspects that students at their school are getting less than eight hours of sleep on average. To test their theory, they randomly sample 42 of these …

If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and …