Evaluate if the process is in control and interpret, Evaluate if the process is

Question

Evaluate if the process is in control and interpret,

Evaluate if the process is in control and interpret,

X-Bar Chart, Days 1 & 2 R Chart, Days 1 & 2 1 3 5 79 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 1 3 5 79 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 X-bar X.barbar barUCLLCL X-Bar Chart, Days 3 & 4 R Chart, Days 3 & 4 R-bar UCL LCL 13 5 79 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 135 7911 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47

Explanation / Answer

While interpreting the control charts, the X-bar chart is used to interpret the process means, and the R-chart is used to measure the process variance.

If the variance is in control, then only we proceed to the X-bar chart.

Here we see that in all the R-charts, the blue line is within the green and violet lines.

In the X-bar chart for Day 1-2, the blue line is extremely close to the upper limit that it almost coincides, but it does not cross beyond the upper limit.

Thus looking at all the charts, since the blue line lies within the control limits, so the process is in control.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.