Even You Can Learn Statistics A Guide for Everyone Who Has Ever Been Afraid of Statistics

Chapter 6. Sampling Distributions and Confidence Intervals

• 6.1 Sampling Distributions

• 6.2 Basic Concepts of Confidence Intervals

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

• 6.4 Confidence Interval Estimate for the Proportion

• Important Equations

• One-Minute Summary

• Test Yourself

You will recall from Section 1.1 that inferential statistics are defined as those in which conclusions about a large set of data, called the population, are made from a subset of the data, called the sample. Inferential statistical methods use the results of a sample statistic to draw conclusions about a population parameter by using just a single sample. Drawing conclusions about a whole thing based on looking at only a (possibly fairly) ...