15. What is the Signal-to-Noise Ratio? = mean or average = standard deviation or natural variation = signal to noise ratio S/N 1 > S/N 2 > S/N 3
16. What is the Signal-to-Noise Ratio? Input Variable X Mean Signal-to-Noise (S/N) Ratio – Output Variable
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19. In the rubber industry an extruder is used to mold the raw rubber compound into the desired shapes. Variation in output from the extruder directly affects the dimensions of the weather strip as the flow of rubber increases or decreases. Find the right settings for a consistent rubber extruder output (number of units produced per minute).
30. 5. Perform the experiment. Open & paste the results from the Excel file named: Inner Array Outer Array
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48. Class Exercise: Seal Strength You are evaluating the factors that affect the seal strength of plastic bags used to ship your products. You’ve identified three controllable factors ( Temperature , Pressure , and Thickness ) and two noise conditions ( Noise1 and Noise2 ) that may affect seal strength. Open the Minitab Project: You want to ensure that seal strength meets specifications. If seal strength is too weak, it may break, contaminating the product. If seal strength is too strong, customers may have difficulty opening the bag. The specification is 18 ± 2 lbs.
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50. Which one of the three control factors influence the robustness of the product (S/N ratio) the most?
51. What are the optimal settings for the most consistent seal strength? Temperature = 60 Pressure = 36 Thickness = 1.25
52. What do you predict are the values for S/N ratio, mean, standard deviation at the optimal settings?