Use the set of data below to complete parts​ (a) and​ (b). ​a) Plot the xy pairs in a scatterplot. ​b) Estimate the linear correlation coefficient between the two data sets. ​c) Calculate​ r, the linear correlation coefficient. ​(5 ​,17​), ​(6 ​,11​), ​(9 ​,12​), ​(12 ​,9​)