Why are most processes not in statistical control whenthey are first sampled for control chart purposes?

Can you please explain the steps to create the control chart ?

Hermitage DNA Labs, LLC collected temperature readings in an analysis process. The data can be found in the Problems Data   Compute the mean and range of each sample and calculate control limits for x-bar and R charts using the appropriate From the charts constructed, does the process appear to be in statistical control?

At Gleditsia Triacanthos Company, a certain manufactured part is deemed acceptable if its lengthis between 12.45 to 12.55 inches. The process is normally distributed with an average of 12.49inches and a standard deviation of 0.014 inches. A) Is the process capable of meeting specifications? B) Does the process meet specifications?

p-chart and c-chart. Using the appropriate control chart, determine two-sigma control limits for each Problem 4 case:a. An inspector found an average of 3.9 scratches in the exterior paint of each of the automobilesbeing prepared for shipment to dealers.b. Before shipping lawn mowers to dealers, an inspector attempts to start each mower and notes anythat do not start on the first try. The lot size is 100 mowers, and an average of 4 did not start (4percent).

A wood shop produces processed wood chips with high precision. The shop wants know whether the process is still controlled using statistical process methods control. The shop owner takes measurements against the Length with 5 samples every day for 10 consecutive days with the results according to the table below. day sample 1 sample 2 sample 3 sample 4 sample 5 1 146 147 145 141 144 2 139 134 135 135 146 3 135 150 130 146 143 4 142 136 145 141 133 5 142 132 146 134 149 6 143 143 141 145 144 7 134 146 144 141 144 8 133 139 146 140 145 9 140 135 135 133 146 10 136 132 130 146 145 From the data mentioned above, the shop owner asks you as a quality expert todetermine whether the production process is still under control with regard toquality.a. Calculate the LCL-X and UCL-X from these measurements and make a sketch of the XChartb. Calculate the LCL-R and UCL-R from these measurements and draw an RChart sketchc. Analyze whether the process is still controlled or…

DEFINE Control charts

Refer to Table S6.1-Factors for Computing Control Chart Limits (3 sigma) for this problem. Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean = 54.75 lb.; Average range R = 1.54 lb. a) For the given sample size, the control limits for 3-sigma x chart are: Upper Control Limit (UCL) = lb. (round your response to three decimal places).