BY -Survey ||| O CORRELATION AND SIMPLE LINEAR REGRESSION Relating the sample correlation coefficient and the parameters

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By Survey O Correlation And Simple Linear Regression Relating The Sample Correlation Coefficient And The Parameters 1 (45.51 KiB) Viewed 10 times

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BY -Survey ||| O CORRELATION AND SIMPLE LINEAR REGRESSION Relating the sample correlation coefficient and the parameters. Standardized test score, x Suppose we want to examine the relationship between scores on a popular standardized test and performance in college. We have chosen a random sample of fifteen students just finishing their first year of college, and for each student we've recorded her score on the standardized test (from 400 to 1600) and her grade point average (from 0 to 4) for her first year in college. The data are shown below, with x denoting the score on the standardized test and denoting the first-year college grade point average. A scatter plot of the data is shown in Figure 1. Explanation 1240 1480 1200 810 990 060 1010 1300 1090 1300 1510 1050 930 890 1350 Check SPWR1824766mkOengouPu6EWNMGungubwXD64A61GOS 4 A Grade point average, y 3.21 3.14 2.81 2.41 2.58 2.19 3.13 3.34 2:38 2.92 3.52 2.95 2.26 2.76 Grade point average Standardized test score Cristian V ©2022 MC. Memutite Expatr DSCN FMPM 7/4/2002

2.26 2.76 3.77 Send data to calculator v Send data to Excel 930 890 1350 Explanation Figure 1 The least-squares regression line for these data has a slope of approximately 0.0015. Answer the following. Carry your intermediate computations to at least four decimal places, and round your answers as specified below. (If necessary, consult a list of formulas.) (a) What is the value of the y-intercept of the least-squares regression line for these data? Round your answer to at least four decimal places. 0 (b) What is the value of the sample correlation coefficient for these data? Round your answer to at least three decimal places. 0 Check Standardized test score x 3 2023 Mc LLC Alves Terms of Use 1 Expatol Accronity 758 7/4/2