From the given table, find (i) the agerage (Mean) wage of a worker. (ii) the model class.
Mean = 44.85 , Model Class 60 - 70
Mean = 35.02 , Model Class 50 - 60
Mean = 44.85 , Model Class 40 - 50
Mean = 38.45 , Model Class 60 - 70
Mean = 44.85 , Model Class 60 - 70