Gem Crisps decided to conduct a quality test of the smaller…
Gem Crisps decided to conduct a quality test of the smaller 5.0 oz. bags of potato chips. On 18 consecutive days they recorded the actual weight for 5 bags of chips selected at random. They found the weights varied and the total of the variances in the ranges was 12.92 ounces. Based on this information, the LCL and UCL values for an R-chart would be: