Find the correlation coefficient, r, of the data described below. Julia teaches a standardized test prep course. Students take a diagnostic test at the beginning of the course and then take the real test at the end. Julia wanted to know how well the diagnostic test predicts a student's score on the real test. She recorded each student's score on the diagnostic test, x, and on the real test, y. Both tests were graded on a scale from 120 to 180. Diagnostic test score Real test score 127 148 138 141 147 126 148 149 171 171 Round your answer to the nearest thousandth.
