Harry Coates wants to construct and R charts at the bag-filling operation for Meow Chow cat food. He knows that when the filling operation is functioning correctly, bags of cat food should average 50.00 pounds and 5-bag samples should have an average range of .330 pounds.
Harry had twenty 5-bag samples taken at 2-hour intervals and the sample means and ranges are shown below. Determine the center lines and upper and lower control limits for the and R charts.

Question

Harry Coates wants to construct  and R charts at the bag-filling operation for Meow Chow cat food. He knows that when the filling operation is functioning correctly, bags of cat food should average 50.00 pounds and 5-bag samples should have an average range of .330 pounds.
Harry had twenty 5-bag samples taken at 2-hour intervals and the sample means and ranges are shown below. Determine the center lines and upper and lower control limits for the  and R charts.

Quizplus · Accepted Answer

The Answer of Harry Coates wants to construct  and R charts at the bag-filling operation for Meow Chow cat food. He knows that when the filling operation is functioning correctly, bags of cat food should average 50.00 pounds and 5-bag samples should have an average range of .330 pounds.
Harry had twenty 5-bag samples taken at 2-hour intervals and the sample means and ranges are shown below. Determine the center lines and upper and lower control limits for the  and R charts.

Harry Coates Wants to Construct and R Charts at the Bag-Filling