university admissions committee must analyze the relationship between a student's score in the SAT and ACT . They believe that the a student's score in the SAT is related to their ACT score . They would like to develop a linear regression equation to help see this relation . From their records , the committee obtains the score on the SAT , X , and the score on the ACT , Y , for 9 different students . These data are below . [ 20 ] Student ACT 33 32 35 SAT 1440 15501590 1320 1120 1400 15101580 1320 33 29 30343228 a ) Find the correlation and linear regression for the data .