Project Management ( project quality management)
Name: _______________ PMAN 639: PROJECT QUALITY MANAGEMENT FINAL EXAM A. Please answer the following True or False questions (each worth 2 points) 1) Special cause variations may fall within the control limits. True ______ False______ 2) A Six Sigma process must have a process capability index of 2.0 or higher. True _____ False________ 3) Control charts are used to determine root causes of the process variations. True ______ False_____ 4) A process in control does not produce unacceptable output. True ______ False______ 5) A process is capable if the variations do not exceed the control limits. True ______ False______ 6) Run chart can be used as a measurement tool to track changes in a process over time. True _____ False________ 7) For a Normally distributed process the control limits are + – 3 times the standard deviation True _____ False________ 1 © UMGC/Fallah 8) Both X bar chart and R chart must be out of control for the process to be out of control True _____ False________ 9) A Pareto Chart is used to identify the root cause of a problem. True ______ False _______ 10) The correlation between two variables can be determined by a scatter plot. True _____ False________ B. Please answer the following multiple choice questions (each worth 4 points)): 1) Which of the following is true of common cause variation? A) It is uncontrollable. B) It is centered around the mean. C) It is inherent in the process. D) All of the above. E) None of the above 2) An R bar chart is used to monitor _________. A. Process Dispersion B. Variation of the baseline C. Trend in standard deviation D. Variation of the Mean 3) Which of the following tools are used to organize ideas. A) Pareto Chart B) Histogram C) Affinity Diagram D) Check sheets E) Process map 4) Which of the following tools is used to analyze cycle time. A) Control Chart 2 © UMGC/Fallah B) Fishbone diagram C) Pareto Chart D) Process map E) Root Cause Analysis 5) A 3 Sigma Process should not have more than _______defects per million opportunities. A. 6,210 B. 3.4 C. 30,000 D. 66,807 C. Please respond to the following questions. Each question is worth 10 points: 1) 9 7 create a process map for withdrawing cash from an ATM machine as 1) Please . described below: Janet needed some cash and walks up to an ATM machine. She inserts her debit card. The machine returns the card and the monitor reads: “could not read the card try again”. Janet recognizes that she has entered the card in the wrong direction. She takes the card and turns it around and insert the card again. The machine keeps the card and the monitor reads: “enter pass code”. Janet enters a 4 digit code. The monitor reads: “ error, try again”. Janet enters the code again. The monitor displays: Withdrawal? Yes No Janet selects Yes. Displays shows: “ $100, $200, $300, $400, $______”. Janet selects $200. The machine pushes out 10 $20 bills. Monitor then displays “Receipt? Yes No”. Janet selects No. Monitor displays “Take your cash” . The machine returns the card. Display changes to “Thank You”. Janet takes the cash and her card and walks away. . 2) 2) A project manager at COMSOFT corporation has collected statistics on the organization’s software development process. She has the size of each project in number of lines of code for the past 20 projects and the number of design errors discovered in design reviews for each of those projects. 3 © UMGC/Fallah Describe what type of control chart you can use and how do you calculate the control limits to check if the software design process in this organization is in control. 3) A project manager at Global Design Corporation has collected the following data on the size of software programs and the length of programming time. The company is bidding on a new system that is estimated to consist of 400,000 lines of code. Use the data to find the correlation function of coding time to the program size and estimate the number of days it would take to code the system. Size in 1000 lines of code (KLOC) Module 4 Number of days to code 1 150 72 2 158 66 3 148 65 4 120 60 5 178 75 6 170 68 7 152 68 8 138 65 9 200 80 10 195 75 11 189 65 12 173 68 13 159 62 14 163 71 15 150 65 16 140 65 17 206 74 © UMGC/Fallah 18 144 64 19 157 70 20 183 76 21 195 75 22 190 77 23 185 73 24 152 58 25 178 70 4) A quality control engineer monitors the quality of a cylinder production line. He regularly selects samples of units and measures the diameters. The specification requires the diameter to be 6 inches plus/minus 0.1 inch. If the true mean and standard deviation of the process are 6.05 and 0.04, a. Is the process capable of meeting its specifications? Calculate its CP and CPk. b. What % of the cylinders if any are out of specs? 5) A product manager has conducted a customer satisfaction survey of 30 customers on a scale of 1 to 5. The survey data is shown below. Calculate the mean and standard deviation of the survey and plot a histogram of the data. Does the distribution approximate Normal? Customer 1 2 3 4 5 6 5 Satisfaction rating 4 3 2 5 5 2 © UMGC/Fallah 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 4 3 4 4 5 3 3 2 1 5 3 4 3 4 2 4 4 3 3 3 2 2 3 Mean= Stnd= 6) A Black Belt consultant in the ABC Corporation reported the Sigma Performance of a manufacturing line as 3.5. Using Z score table calculate the % defective units coming off the production line. 6 © UMGC/Fallah
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