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.
Towing Capacity for a 2004 Chevy Suburban 1500 when Using a Weight Distribution System. Question: Hello I was told by Chevy that our 2004 1500 Suburban can tow 7400 lbs with a standard hitch but that we can tow more weight if we get a weight distributing hitch.