AN 300 Review Exam 2 I. Forecasting Forecast Errors: MAD‚ Bias * (1) Forecasts are usually wrong. Errors are inevitable and must be expected. (2) Every forecast should include an estimate of error. (3) Forecasts are more accurate for families or groups. (4) Forecasts are more accurate for nearer time periods. Anything that can be done to reduce lead-time will improve forecast accuracy. * Bias indicates the directional tendency of FE <------> MAD indicates the magnitude of
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shortages. Let the parameters from the basic EOQ model. d = constant demand rate K = setup cost for placing one order Q = order quantity h = inventory holding cost per unit of product per unit of time p = shortage cost per unit of product per unit of time S = inventory level just after an order of size Q arrives So‚ Q– S = Shortage in inventory just before an order of Q units is added Production or ordering cost per cycle = K+cQ ‚ where cQ is the unit cost During each
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Department of Decision Sciences San Francisco State University FINAL EXAM QUESTIONS The sample problems below are organized by topic. Where possible‚ answers are given. Disclaimers: • These questions are questions that have appeared on previous years’ (final) examinations. They are for practice only. There is no guarantee that the questions on your finals will be the same‚ or that different professors will give the same types of questions. • Not all 412/786 sections cover the same material
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the problems faced in their inventory management processes. Starbucks follows the EOQ model‚ which involves heavy calculations and predictions. Without the formulas and some basic information about the demands from customers‚ the cost of placing orders‚ and other variables‚ the calculation of the EOQ model will not be able to reach its optimal potential. From this‚ collecting the accurate information for the calculations is vital‚ the company has to acquire reliable and timely sources. Conveying
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JUST-IN-TIME‚ AND SIMPLIFIED COSTING METHODS 20-1 Cost of goods sold (in retail organizations) or direct materials costs (in organizations with a manufacturing function) as a percentage of sales frequently exceeds net income as a percentage of sales by many orders of magnitude. In the Kroger grocery store example cited in the text‚ cost of goods sold to sales is 76.8%‚ and net income to sales is 0.1%. Thus‚ a 10% reduction in the ratio of cost of goods sold to sales (76.8 to 69.1% equal to 7.7%) without any
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the Gladiators’ logo on it. The cap has an elastic headband inside it‚ which conforms to different head sizes. However‚ the store has had a difficult time keeping the cap in stock‚ especially during the time between the placement and receipt of an order. Often customers come to the store just for the hat; when it is not in stock‚ customers are upset‚ and the store management believes they tend to go to other competing stores to purchase their Gladiators’ clothing. To rectify this problem‚ the store
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spreadsheet calculate a quantity discount analysis for a quote using range quantities. 3. What quantity should Minnie order if she wants to receive the lowest incremental costs between quantities? Quantity Range Quoted Price Quantity Range Incremental Cost 1-999 $4.03 First 999 units $4.03 1000-1999 $4.00 next 999 units $3.97 2000-2999 $3.97 next 999 units $3.91 At least 3000 $3.94 $- Minnie should go with the range of ordering between 2000-2999 in order to achieve the
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............................................ 11 2 1. Introduction The Newsboy problem is a classical and significant inventory problem. It is normally known as the single period inventory model. It is a suitable tool to decide the stock quantity of an item when there is a single purchasing opportunity before the start of the selling period and the demand for the item is uncertain. We can find such a model in problems dealing with the stocking of spare parts‚ perishable items‚ style goods
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Operations Management I 73-331 Winter 2001 Faculty of Business Administration University of Windsor Final Exam Tuesday‚ April 17‚ Noon – 3:00 p.m. Faculty of Education Neal Building Room 1101 Instructor: Mohammed Fazle Baki Aids Permitted: Calculator‚ straightedge‚ and a both-sided formula sheet. Time available: 3 hours Instructions: This exam has 11 pages including this cover page and 1 page of Table Please be sure to put your name and student ID number on each page. Show your
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management and applied economics for years to determine optimal ordering quantity under uncertain demand. Perishable goods such as banana and lettuce cannot be carried from one period to another. Managers have to make decision on the inventory level of perishable goods over a very limited period. For example‚ due to the uncertainty of the demand of the newspaper‚ the newsboy has to decide how many newspapers to order each day. If he orders too few‚ he will forgo some profit; if he orders too much‚ any unsold
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