Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Process Capability Index - Asymmetrical Positioning of the Process
As stated earlier, the Cp index assumes that the process mean is centred within the tolerance band, but, in practice, this is often an unreasonable assumption. For this reason, alternative indices have been devised which take account of asymmetrical positioning of the process mean relative to mid-tolerance. Consider the process output represented in this next figure, for which the LSL is 10, the USL is 20, the process mean (µ) is 18 and the standard deviation (σ) is 1.166. For this process the Cp index value is 1.43 [i.e. (20 - 10)/ (6 × 1.166)], which might suggest that the output has a very low level of non-conformance. However, as can be seen from the figure, a significant proportion of the output actually lies beyond the upper specification limit. The Cpk index takes account of the asymmetry by relating the spread of one side of the output distribution (3σ) to the difference between the process mean (µ) and the nearest specification limit. Two calculations are performed, and the lowest value (worst case) is taken as the index value.
In the example in the figure above, the Cpk index is 0.57 [ie (20 - 18)/(3 × 1.166)], indicating that the process, as currently set, is not capable of producing to the design specification. The following figure shows the significance of different Cpk values.
Sid Das Brick Distributors currently employs 1 worker whose job is to load bricks on outgoing company trucks. An average of 24 trucks per day, or 3 per hour, arrive at the loading
Howard Electronics, a small manufacturer of electronic research equipment, has approximately 7,000 items in its inventory and has hired Joan Blasco-Paul to manage its inventory. Jo
In light of these actions, can GM still be a socially responsible company? If so, how?
What are the advantages of holding inventory control systems? Advantages of holding inventory control Systems: a. Discounts for bulk buying for example, order higher volumes
Which of the following best shows forces for change vs. forces for stability? Change forces are: adapting, sustaining, and predicting; whereas stability forces are: bureaucracy, tr
1. Custom Computers, Inc. assembles custom home computer systems. The fan assemblies needed are bought for $24 each and are ordered in quantities of 1500 units. Annual demand is 75
• What lessons learned other companies (in vastly different industries) could take away from the innovative practices at Holden. Provide specific examples to support your response.
1. What is the role of a CIO in today's global business environment? 2. Dr. Carr presents a good argument in the "IT doesn't matter" reading. Present your view of Carr's central
A state department of tourism and recreation collects data on the number of cars with out-of-state license plates in a state park. (The group's position is that more out-of-state p
What are the disadvantages of the Level capacity strategy? The disadvantages of the Level capacity strategy are as follows: a. High risk of stock obsolescence when customer
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd