Consider the following small data set.
Subject x y
\(1\) \(6\) \(19\)
\(2\) \(8\) \(17\)
\(3\) \(14\) \(21\)
\(4\) \(8\) \(31\)
\(5\) \(6\) \(17\)
Find the linear correlation coefficient.
\(r =\)