The average of allsubgroups becomes the centerline for the lower plotting area. Average of Ranges Example Step 7 - Calculate the upper control limit (UCL) and lower control limit (LCL)for the averages of the subgroups. At this point, your chart will look like aRun Chart. Now, however, the uniqueness of the Control Chart becomes evidentas you calculate the control limits.
Ford Motor Company recommends that the Crown Vic limit its towing to a trailer with a gross vehicle weight of 1500 lbs or less with a tongue weight not to exceed 150 lbs. See HERE.
No, the 2014 Forester can tow up to 1,500 pounds, including the weight of the trailer and all that is on it. Subaru notes that trailer brakes are required when the amount being towed exceeds 1,000 pounds. Car-based crossovers such as the Forester dominate the SUV market, but one limitation of four-cylinder models is their modest towing capability.