SENSITIVITY ANALYSIS The solution obtained by simplex or graphical method of LP is based on deterministic assumptions i.e. we assume complete certainty in the data and the relationships of a problem namely prices are fixed‚ resources known‚ time needed to produce a unit exactly etc. However in the real world‚ conditions are seldom static i.e. they are dynamic. How can such discrepancy be handled? For example if a firm realizes that profit per unit is not Rs 5 as estimated but instead closer
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Health economics What is sensitivity analysis? Matthew Taylor PhD MSc Senior Consultant‚ York Health Economics Consortium‚ University of York G While economic models are a useful tool to aid decision-making in healthcare‚ there remain several types of uncertainty associated with this method of analysis. G One-way sensitivity analysis allows a reviewer to assess the impact that changes in a certain parameter will have on the model’s conclusions. G Sensitivity analysis can help the reviewer to
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Linear Programming Notes VII Sensitivity Analysis 1 Introduction When you use a mathematical model to describe reality you must make approximations. The world is more complicated than the kinds of optimization problems that we are able to solve. Linearity assumptions usually are significant approximations. Another important approximation comes because you cannot be sure of the data that you put into the model. Your knowledge of the relevant technology may be imprecise‚ forcing you to approximate
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Sensitivity analysis is a technique that indicates exactly how much a project’s profitability (NPV or IRR) will change in response to a given change in a single input variable‚ other things held constant. Sensitivity analysis begins with a base case developed using expected values (in the statistical sense) for all uncertain variables. Then‚ each uncertain variable is usually changed by a fixed percentage amount above and below its expected value‚ holding all other variables constant at their expected
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Background Victoria Chemicals‚ a major player in the global chemical industry that supplies polypropylene‚ polymer that used to manufacture carpet fibers‚ packaging‚ automobile parts to the customers in Europe and the Middle East. Apart from numerous small producers‚ the company also receives the threats from the other seven major competitors. The company owns two plants in Europe‚ one being Merseyside Works‚ England and Rotterdam Facility‚ Holland. Both plants were built in 1967 and are identical
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VICTORIA CHEMICALS PLC THE MERSEYSIDE AND ROTTERDAM PPROJECTS I would choose Merseyside project rather than Rotterdam’s not only for its superior prospect based on the quantitative criteria‚ but also for a more rational strategy consideration. For the four investment criteria‚ here’s the elaboration. NPV. Since the two plants are of identical scale‚ age‚ design and similar project size‚ it makes sense to use NPV to compare the two projects. Not taken into account the erosion at Merseyside‚
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Sensitivity Analysis Source: Introduction to Management Science 10 e‚ Anderson Sweeney Williams Example 1 Max s.t. 5x1 + 7x2 x1 < 6 2x1 + 3x2 < 19 x1 + x2 < 8 x1‚ x2 > 0 x2 8 7 6 5 4 3 2 1 x1 + x2 < 8 Max 5x1 + 7x2 x1 < 6 Optimal: x1 = 5‚ x2 = 3‚ z = 46 2x1 + 3x2 < 19 x1 1 2 3 4 5 6 7 8 9 10 x2 8 7 6 5 4 3 2 1 5 5 Feasible Region 1 1 1 2 3 4 4 4 3 3 2 2 5 6 7 8 9 10 x1 Example 1 • Range of Optimality for c1 The slope of the objective
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Sensitivity Analysis The variables used to develop the table‚ including sales price‚ variable costs‚ unit sales‚ and the unit growth rate‚ are all most likely‚ or base-case‚ values‚ and the resulting $25‚517 NPV shown in Part 5 is called the base-case NPV. Now we ask a series of "what if" questions: "What if unit sales falls 30 percent below the most likely level?" In our sensitivity analysis we hold the other variables at their base case levels and then examine the situation when the key variables
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In a room‚ a lady named Victoria Skillane awakens in a seat to discover she can’t remember anything about who she is. The audience may conclude she is the result of a failed suicide attempt‚ Victoria is encompassed by pictures of a little young lady — whom she expects to be her child — and in addition photographs of her and what looks like to be her husband. On the TV screens in the house‚ Victoria sees a peculiar image and a calendar showing the month October‚ with every one of the dates being checked
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Assignment #3 BLAW 502 (Summer Class I‚ 2013): The Richard Spellman Case Total word count: 1724 1) Is there any need for Spellman to wade through the draft documents? (224 words) There is definitely the need for Richard Spellman to go through the draft documents. He needs to ensure that the employment deal that he had discussed with Walt Sawyer was in fact what the contract spelled out and that all information that has been exchanged informally‚ has been taken into consideration on the formal
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