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19 I need help 19 The following data are for intelligence-test (IT) scores, grade-point averages (GPA), and reading rates (RR) of 20 at-risk students. IT

19 I need help

19 The following data are for intelligence-test (IT) scores, grade-point averages (GPA), and reading rates (RR) of 20 at-risk students. IT 295 152 214 171 131 178 225 141 116 173 GPA 2.4 6 .2 0 1 .6 .4 0 2.6 RR 41 18 45 29 28 38 25 26 22 37 IT 230 195 174 177 210 236 198 217 143 186 GPA 2.6 0 1.8 0 4 1.8 .8 2.8 RR 39 38 24 32 26 29 34 38 40 27 a. Calculate the line of best fit that predicts the GPA on the basis of IT scores. b. Calculate the line of best fit that predicts the GPA on the basis of RR scores. c. Which of the two lines calculated in parts a and b best fits the data

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