Histograms
•Assume:
–V(Employee, Salary) = 200
–V(Ranks, Salary) = 250
•Then T(Employee            Ranks) =
 = Si=1,6 Ti Ti’ / 250
 = (200x8 + 800x20 + 5000x40 +
      12000x80 + 6500x100 + 500x2)/250
 = ….
•
Salary