The following table shows students’ test scores on the first two tests in an introductory biology class.
Biology Test Scores
First test, x 69
42
62
83
75
79
86
79
76
71
44
87
Second test, y 63
38
59
75
73
73
87
79
79
76
53
78
Step 1 of 2: Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary.
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