The following measurements for a sample with dimension X are representative of a process known to be in statistical control 42, 52, 64, 45, 53, 56, 70, 57, 49, 62 Which of the following values BEST approximates the upper and lower control limits of the process capability.

Question

Quizplus · Accepted Answer

The upper and lower control limits are typically calculated as the mean plus or minus three standard deviations. The mean of the sample is 55, and the standard deviation is approximately 8.67. Therefore, the control limits are approximately 55 + 3(8.67) = 81 and 55 - 3(8.67) = 29.

The Following Measurements for a Sample with Dimension X Are