Find the range and coefficient of  range for the given set of numbers.
 
\(16.9\), \(6.5\), \(25\), \(32.8\), \(6.5\), \(6.5\), \(54.8\), \(47.4\), \(32.8\), \(16.9\), \(47.4\), \(54.8\), \(25\), \(32.8\), \(6.5\), \(47.4\), \(32.8\), \(54.8\), \(54.8\), \(6.5\)