The data relevant to Exercise 9.13 are the test scores and SAT-V scores for the 28 people in the group that did not read the passage. These data are
Make a scatterplot of these data and draw by eye the best-fitting straight line through the
Answer to relevant QuestionsCompute the correlation coefficient for the data in Exercise 9.14. Is this correlation significant, and what does it mean to say that it is (or is not) significant? Assume that a set of data contains a curvilinear relationship between X and Y (the best-fitting line is slightly curved). Would it ever be appropriate to calculate r on these data? David Lane at Rice University has an interesting example of a study involving correlation. This can be found at http://www.ruf.rice.edu/~lane/case_studies/physical_strength/index.html. Work through this example and draw your ...Draw a diagram (or diagrams) to illustrate Exercise 10.10. The following data are the actual heights and weights referred to in Chapter 9 of female college students: (a) Make a scatterplot of the data. (b) Calculate the regression coefficients for these data. Interpret the slope and ...
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