6.2 Sampling Error and Confidence Intervals

6.3 Confidence Interval Estimate for the Mean Using the *t* Distribution (σ Unknown)

6.4 Confidence Interval Estimation for Categorical Variables

In Section 1.3, you learned that you can use **inferential statistics** to make conclusions about a large set of data called the **population**, based on a subset of the data, called the **sample**. Specifically, inferential statistical methods use a single sample to calculate a sample statistic from which conclusions about a population parameter are made. Using a small part to make conclusions about a whole larger thing sometimes ...

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