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Expected counts in chi-squared tests with two-way tables. Test statistic and P-value in chi-square tests with two-way tables. Making conclusions in chi-square tests for two-way tables. Inference for categorical data (chi-square tests): Unit test.
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Whenever we’re unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are. The analysis of events governed by probability is called statistics. View all of Khan Academy’s lessons and practice exercises on probability and statistics.
We'll measure the position of data within a distribution using percentiles and z-scores, we'll learn what happens when we transform data, we'll study how to model distributions with density curves, and we'll look at one of the most important families of distributions called Normal distributions.
Probability and Statistics - Khan Academy
This introduction to probability and statistics explores probability models, sample spaces, compound events, random samples, and a whole lot more.
Learn a powerful collection of methods for working with data! AP®️ Statistics is all about collecting, displaying, summarizing, interpreting, and making inferences from data.
If you're curious about the mathematical ins and outs of probability, you've come to the right unit! Here, we'll take a deep dive into the many ways we can calculate the likelihood of different outcomes.
If you're curious about the mathematical ins and outs of probability, you've come to the right unit! Here, we'll take a deep dive into the many ways we can calculate the likelihood of different outcomes.
By learning how to use tools such as bar graphs, Venn diagrams, and two-way tables, you'll expand your abilities to see patterns and relationships in categorical data.