Chapter Summary 515 9 Chapter Summary Example(s) Review Exercises What Did You Learn? Section 9.1 How to construct a scatter plot and how to find a correlation coefficient r = nΣxy - 1Σx21Σy2 2 nΣx2 - 1Σx222nΣy2 - 1Σy22 1–5 1–4 How to test a population correlation coefficient r using a table and how to perform a hypothesis test for a population correlation coefficient r 6, 7 5–8 Section 9.2 How to find the equation of a regression line and how to predict y-values using a regression equation ny = mx + b, where m= nΣxy - 1Σx21Σy2 nΣx2 - 1Σx22 and b = y - mx = Σy n - m Σx n 1–3 9–12 Section 9.3 How to find and interpret the coefficient of determination 1 13–18 How to find and interpret the standard error of estimate for a regression line 2 17, 18 How to construct and interpret a prediction interval for y ny - E 6 y 6 ny + E, where E = t c seC1 + 1 n + n1x0 - x2 2 nΣx2 - 1Σx22 3 19–24 Section 9.4 How to use technology to find and interpret a multiple regression equation, the standard error of estimate, and the coefficient of determination 1 25, 26 How to use a multiple regression equation to predict y@values 2 27, 28 Study Strategies Using Text Notes to Build Critical Thinking Skills Instructors expect you to use critical thinking skills. To use text notes to build critical thinking skills, you can follow the steps outlined by educational psychologist Dr. Benjamin Bloom (listed below). This process will help you learn more effectively, enabling you to truly master a body of knowledge. • Take notes to build knowledge about main concepts and terms in your reading. (Taking text notes is discussed in the Chapter 8 Summary.) • Research a passage to find examples so you can apply your knowledge. • Analyze what information is similar or different between your class notes and your reading notes and analyze what is most important to learn. • Synthesize by combining your class and reading notes. • Evaluate what you fully understand and what is still unclear. For more information, visit Skills for Success in the accompanying MyLab course.
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