Determine the type of correlation that exists in the given data set. r s –40 2 –30 36 –20 27 –10 78 0 13 10 96 20 39 30 4 40 68 a. a positive correlation exists between variables r and s. b. a negative correlation exists between variables r and s. c. no correlation exists between variables r and s. d. there is not enough information to determine what type of correlation exists between variables r and s.