Number defective - np chart, Operation Management

Number Defective - Np Chart

This type of chart can be used when it is possible to establish a constant sample size n. It has the advantage that it is readily understood by users and easy to use. The numbers of defectives found in the samples are plotted directly. Again, the binomial distribution applies and the determination of control limits is similar in format to that for p-charts: n¯p is the expected number of defectives in a sample.

Warning Limits = n¯p + 1.96 √ n¯p (1- ¯p)

Action Limits = n¯p + 3.09 √ n¯p (1- ¯p)

Posted Date: 3/16/2013 1:52:39 AM | Location : United States

Related Discussions:- Number defective - np chart, Assignment Help, Ask Question on Number defective - np chart, Get Answer, Expert's Help, Number defective - np chart Discussions

Write discussion on Number defective - np chart
Your posts are moderated
Related Questions
Two law students, John and Marsha, are planning an all-nighter to prepare for their law boards the following day. Between them they have one set of materials in the following five

Q 1 Low level coding in MRP indicates the exact status of each item managed by the system in "real time." Q 2 Which of the following is considered a secondary report in an MRP s

Goggle's Strategy 2010: Which of the five competitors seem strongest against Google? Weakness? What is your assessment of overall industry attractiveness?

Which of the following is not one of the three types of specifications discussed in the text? Answer Design specifications Material specifications Performance specifica

Identify and describe the key factor(s) in effective project control.

How the job of industrial manager becomes more difficult? However, the job of industrial Manager becomes still more difficult because of: (i) Change in technology; (ii) C

Describe Google's customer value proposition and profit formula linked to its business model. What strategies has Google relied upon to build competitive advantage in the industry?

What is meant by Direct Cost? Ans: Direct Cost is Direct Material cost and Labour cost.

Performance Measures - Operation Strategy It is common to find that measures are made of operational factors which do not contribute to the winning of orders, whilst key facto

Advantages of Process Layout Lower Capital Investment : Less capital is needed for this layout because production apparatus is applied to maximum capacity with minimum dup