Concept explainers
a)
To run: The regression for performance rating versus explanatory variables.
Introduction:
b)
To predict: The performance rating score of the worker.
Introduction: Forecasting is a technique of predicting future events based on historical data and projecting them into the future with a mathematical model. Forecasting may be an intuitive or subjective prediction.
c)
To run: The regression equation.
Introduction: Forecasting is a technique of predicting future events based on historical data and projecting them into the future with a mathematical model. Forecasting may be an intuitive or subjective prediction.
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Practical Management Science
- Fire Department Turns to BI Analytics. New York City has nearly one million buildings, and each year, more than 3000 of them experience a major fire. The Fire Department of the City of New York (FDNY) is adding BI analytics to its arsenal of firefighting equipment. It has created a database of over 60 different factors (e.g., building location, age of the building, whether it has electrical issues, the number and location of sprinklers) in an attempt to determine which buildings are more likely to have a fire than others. The values of these parameters for each building are fed into a BI analytics system that assigns each of the city's 330,000 inspectable buildings a risk score. (FDNY doesn't inspect single and two-family homes.) Building inspectors then use these risk scores to prioritize which buildings to visit on their weekly inspections. The FDNY has roughly 350 inspectors who are trained and certified to perform their duties.Which set of three parameters all provide measures…arrow_forwardWhich of the following statements is correct regarding the EMH form? Select one: None of the answers are correct If the market is weak-form efficient, then it is also semistrong and strong-form efficient. If the market is semistrong form efficient, then it is also strong form efficient If a market is strong-form efficient, it is also semistrong and weak form efficient If the market is strong-form efficient, it is also semistrong but not weak-form efficientarrow_forwardIn the manufacture of paper products, automation is used to increase productivity while reducing human resource requirements. Mechanical faults, which can severely reduce output, occur more frequently because people are not involved in much of the production process. These problems need to be caught quickly. One method for discovering these faults is through vibration analysis. Each type of problem generates a different type of vibration. The paper industry uses _____ to determine the type, severity, and location of vibrations in its machinery as well as to create a timetable for maintenance activities. A. trend analysis B. expert systems C. decision support systems D. executive information systems E. RAID systemsarrow_forward
- To better plan for future growth of the restaurant, Karen needs to develop a system that will enable her to forecast food and beverage sales by month for up to one year in advance. Table shows the value of food and beverage sales ($1000s) for the first three years of operation. Food and Beverage Sales for the Vintage Restaurant ($1000s) Month First Year Second Year Third Year January 242 263 282 February 235 238 255 March 232 247 265 April 178 193 205 May 184 193 210 June 140 149 160 July 145 157 166 August 152 161 174 September 110 122 126 October 130 130 148 November 152 167 173 December 206 230 235 Managerial Report Perform an analysis of the sales data for the Vintage Restaurant. Prepare a report for Karen that summarizes your findings, forecasts, and recommendations. Include the following: A time series plot. Comment on the underlying pattern in the time series.…arrow_forwardBelow shown is a logical representation of an index table built on columnA SearchKey Record Location G005234 1 G098967 3 G099537 9 G136790 13 Based on the provided information, which one of the following statements is correct? O a. There is not enough information to conclude the nature of this index O b. It is definitely a sparse index O c. It is definitely a dense index O d. It is most likely a dense index, but could possibly be sparse ◇ e. It is most likely a sparse index, but could possibly be densearrow_forwardThe InfoSec measurement development process recommended by NIST is is divided into two major activities. Which of the following is one of them? Identification and definition of the current InfoSec program Regularly monitor and test networks Compare organizational practices against organizations of similar characteristics Maintain a vulnerability management programarrow_forward
- A three year old Canadian who moves to the U.S. and becomes a U.S. citizen can be elected president once they reach age 35. True Falsearrow_forwardFRUIT COMPUTER COMPANY Fruit Computer Company manufactures memory chips in batches of ten chips. From past experience, Fruit knows that 80% of all batches contain 10% (1 out of 10) defective chips, and 20% of all batches contain 50% (5 out of 10) defective chips. If a good (that is, 10% defective) batch of chips is sent to the next stage of production, processing costs of $4000 are incurred, and if a bad batch (50% defective) is sent on to the next stage of production, processing costs of $16000 are incurred. Fruit also has the alternative of reworking a batch at a cost of $4000. A reworked batch is sure to be a good batch. Alternatively, for a cost of $400, Fruit can test one chip from each batch in an attempt to determine whether the batch is defective. QUESTIONS 1.Determine a strategy so Fruit can minimize the expected total cost per batch. 2.Compute the EVSI and EVPI.arrow_forwardBicycling World, a magazine devoted to cycling, reviews hundreds of bicycles throughout the year. Its "Road-Race" category contains reviews of bicycles used by riders primarily interested in racing. One of the most important factors in selecting a bicycle for racing is the weight of the bicycle. The following data show the weight (pounds) and price ($) for ten racing bicycles reviewed by the magazine. Click on the datafile logo to reference the data. Model Weight (lb) Price ($) Fierro 7B 17.9 2,200 HX 5000 16.2 6,350 Durbin Ultralight 15.0 8,470 Schmidt 16.0 6,300 WSilton Advanced 17.3 4,100 Bicyclette vélo 13.2 8,700 Supremo Team 16.3 6,100 XTC Racer 17.2 2,680 D'Onofrio Pro 17.7 3,500 Americana #6 14.2 8,100 (b) Use the data to develop an estimated regression equation that could be used to estimate the price for a bicycle given its weight. What is the estimated regression model? Let x represent the bicycle weight. If…arrow_forward
- The original z-score formula intended for public manufacturing companies is shown below: Altman Z-Score = (1.2 × X1) + (1.4 × X2) + (3.3 × X3) + (0.6 × X4) + (0.99 × X5) The inputs for our z-score calculation are the following: X1 = Working Capital ÷ Total Asset X2 = Retained Earnings ÷ Total Assets X3 = EBIT ÷ Total Assets X4 = Market Capitalization ÷ Total Liabilities X5 = Sales ÷ Total Assets The following assumptions will be used for our modeling exercise. Current Assets = $60 million Current Liabilities = $40 million Fixed Assets = $100 million Net Income = $10 million Dividends = $2 million Sales = $60 million COGS and SG&A = $40 million P/E Multiple = 8.0x Total Liabilities = $120 million What is the Z-score?arrow_forwardHow can we execute the Solver and interpret results from the reports provided by the programarrow_forwardThe Commission of Education reported that 47% of college freshmen earn a degree and graduate within 5 years. Assume that the graduation records show that women make up 50% of the students who graduated within 5 years, but only 45% of the students who did not graduate within 5 years. The students who had not graduated within 5 years either dropped out or were still working on their degrees. a. Let A1 = the student graduated within 5 yearsA2 = the student did not graduate within 5 yearsW = the student is a female student Using the given information, what are the values for P(A1), P(A2), P(W ǀ A1)and P(W ǀ A2)? P(A1) = ____________ P(W ǀ A1) = _______P(A2) = ____________ P(W ǀ A2) = _______ b. What is the probability that a female student will graduate within 5 years?Identify the values of the following:P(A1)P(W/A1)P(A1 ∩ W)P(A1/W)P(A2) P(W/A2) P(A2 ∩ W)P(A2/W) P(W) = _______ c. What is the probability that a male student will graduate within 5 years? d. Given the preceding results, what…arrow_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,