In a quality control test, 8 samples, each having four plateh, were selected and the thickness of each plate in each sample was\table[[sample,plate 1,plate 2,plate 3,plant 4,,,,],[number,thickness,thickness,thickness,thickness,Average,Maximum,Minimum,Range],[1,47,50,50,41,,,,],[2,38,47,43,43,,,,],[3,46,44,43,46,,,,],[4,48,42,47,47,,,,],[5,47,47,38,45,,,,],[6,48,40,47,48,,,,],[7,41,46,39,40,,,,],[8,46,37,45,43,,,,]]Calculate the values in the lant four columns and answer the questions.What is the tolal walue of the average column [a.e. the sibth column in the tabic)