Tham khảo tài liệu 'business process improvement_17', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Cumulative Residual Standard Deviation Plot Conclusions from the Cumulative Residual SD Plot We can make the following conclusions from the cumulative residual standard deviation plot. 1. The baseline model consisting only of the average Y has a high residual standard deviation 95 . 2. The cumulative residual standard deviation shows a significant and steady decrease as the following terms are added to the average X2 X7 X1 X3 X1 X3 X2 X3 and X1 X2. Including these terms reduces the cumulative residual standard deviation from approximately 95 to approximately 17. 3. Exclude from the model any term after X1 X2 as the decrease in the residual standard deviation becomes relatively small. 4. From the effects plot we see that the average is the estimated X2 effect is and so on. We use this to from the following prediction equation Note that X1 X3 is confounded with X2 X7 and X4 X6 X1 X5 is confounded with X2 X6 and X4 X7 and X1 X2 is confounded with X3 X7 and X5 X6. From the above graph we see that the residual standard deviation for this model is approximately 17. NIST SEMATECH HOME TOOLS it AIDS I SEARCH BACK NEMĨ http div898 handbook pri section6 2 of 2 5 1 2006 10 31 54 AM . Next Step Dex Contour Plot ENGINEERING STATISTICS HANDBOOK home SEARCH BACK NfJiFI TOOLS 4 4IOỈ 5. Process Improvement . Case Studies . Sonoluminescent Light Intensity Case Study . Next Step Dex Contour Plot Purpose The dex contour plot is used to determine the best factor settings for the two most important factors in the next iteration of the experiment. From the previous plots we identified X2 solute and X7 horn depth as the two most important factors. Sample Dex Contour Plot Sono luminescent Light Intensity Contour Plot of the 2 Dominant Factors X2 and X7 http div898 handbook pri section6 1 of 2 5 1 2006 10 31 55 AM . Next Step Dex Contour Plot Conclusions from the Dex .
