This textbook offers an accessible and comprehensive introduction to statistics for all undergraduate psychology students, but particularly those in their second and third years who have already covered an initial introductory course. It covers all of the key areas in quantitative methods including sampling, significance tests, regression, and multivariate techniques and incorporates a range of exercises and problems at the end of each chapter for the student to follow.
The free CD-ROM with tutorial modules complements and enhances the exercises in the text, offers scope for distance learning, and makes both the traditional and non-traditional approaches much more accessible.
Key points of the book are: an emphasis on measurement, data summaries and graphs; a clear explanation of statistical inference using sampling distributions and confidence intervals, making significance tests much easier to understand; and help for students to understand and judge the use of particular tests in the research context beyond simple recipe following.
Chapter 5: Sampling Distributions and Confidence Intervals
Sampling Distributions and Confidence Intervals
Estimating a Population Parameter from a Sample
So far, we have examined the concepts of random samples and randomized assignment, both fundamental to designing psychological studies. We have also found that behind these concepts lies the notion of estimating probabilities from sufficiently long runs of independent observations. This chapter has three main goals. The first is to extend our knowledge of how to estimate things about populations on ...