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.
Clerks at Lotsa Data Systems key in thousands of insurance records each day for a variety of client firms. The process is in control but CEO Donna Lotsa wants to be sure that at
Obsolete technology can cost an organisation its customers.Explain the role of computers in production and operations management
By using a familiar industry discuss the above
Determine the Appropriate Sample Size The following work sampling data was collected from observing a retail assistant: Activity
Stakeholders of a company are shareholders, the community, customers, employees, and all of the other parties that have an interest in seeing that the company succeeds. True False
In the world of marketing, _____ are ideas about products or services. (Points : 3) concepts notions perceptions impressions theories
A firm plans to begin production of a new small appliance. The manager must decide whether to purchase the motors for the appliance from a vendor at $7 each or to produce them in-h
Leaders must be held accountable for achieving desired results. What does this mean to you?
1. Describe how you think the hotel's management will: (a) make sure that the way it manage the hotel is appropriate to the way it competes for business; (b) implement any change i
A manufacturer of business copier workstations has a 75 percent customer retention rate. Their accounting department estimates the incremental contribution to profit and overead as
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