R-Chart
An emergency room at a hospital required to understand as well as better control the waiting time of patients. To do this they constructed as well as R-charts by sampling the waiting times of the first five patients confessed to the ER at the beginning of each shift (7 a.m., 3 p.m., and 11 p.m.). What do you ponder of this approach? Will it deliver the information the hospital administrators seek? How might the sampling process be enhanced and what would you recommend?