Determine the type of correlation that exists in the given data set. {(45, 18), (62, 13), (72, 11), (55, 15), (38, 21), (26, 31), (93, 9), (64, 13), (29, 28), (33, 25), (49, 17)} a. a positive correlation exists between the variables in this data set. b.a negative correlation exists between the variables in this data set. c.no correlation exists between the variables in this data set. d.there is not enough information to determine what type of correlation exists between the variables in this data set