Quiz exam 3 notes - exam 3 quizzes PDF

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Quality management practice quiz 1. Common or random variation is variation which is the result of some change in the system and can usually be traced to some specific cause. a. (false) 2. A process that is ____ consistently meets design specifications (referred to as tolerance) or customer specifications. a. Capable 3. A set of statistical tools that allows us to monitor a process, see if it is stable and distinguish randomness from variation that we can track down and eliminate a. (statistical process control) 4. A process that exhibits only random or common variation is said to be ___ control. a. In 5. The two objectives of process control are to ______ and ______ variability. a. Detect and reduce 6. Visual depictions of quality measurements made from samples taken from a process, with multiple samples taken over time. a. Control chart 7. Inspecting a product at the end of a process a. Product control 8. Acceptance sampling is inspecting goods before, during, or after production. It is different from process control. a. True 9. Assignable variation is variation which is the result of some change in the system and can usually be traced to some specific cause. a. True 10. The enemy of quality control is a. Variability 11. Also known as the x-bar chart; this chart captures averages from series of samples and displays them as a sequential (time-ordered) plot. a. Mean chart 12. Quality management deals with meeting ________ requirements. a. Customer 13. The primary goal of quality control is a. Conformance quality 14. A measure of the variability of the variable we want to use to measure a process a. Process standard deviation 15. The costs of quality control include all of the following: a. Cost of passing defectives, cost of inspection 16. Monitoring individual process steps to ensure a process is running the way we want it to.

a. Process control 17. The mean of the variable we want to use to measure a process. a. Process mean SPC practice quiz 1. The objective of ____ is to balance the tradeoff between the cost of passing defectives and the cost of inspection a. Acceptance sampling 2. Process control includes all of the following except a. Inspecting 100% of products at the end of a process 3.

4. This statistical process control tool captures averages from a series of samples and displays them as a sequential (time ordered) plot. a. Mean chart 5. What is the process mean

6. You are observing a donut making operation where the customer specification is for the diameter of the donut to be exactly 5 inches. You take 2 measurements every other hour of your 8-hour shift. From this data you calculate a process mean of 5 inches, a standard deviation of 0.25 inches, and you choose to set “z” to a value of 3, then what will the lower control limit be? a. 4.25 7. A process which exhibits only common (random) variation is: a. In control 8. Conformance quality falls within the purview of product design and is focused on delivering a high level of some performance dimension a. False 9. This process is

a. In control 10. A process variability increases, defect rate a. Increase

Queuing and service management 1. All else equals, as the number of servicing points within a facility decrease the utilization a. Increases 2. As the coefficient of variation for interarrival time increases, line length will a. Increase 3. The percentage of time that servers are busy with customers is known as the a. Utilization factor 4. All else equals, as utilization increases, line length will a. Increase 5. The cost of waiting in line include all of the following except a. Increasing the capacity of servers 6. All of the following contribute to the perception of a longer wait time except a. Distraction 7. Combining smaller service systems into one larger system is known as a. Pooling 8. The sources of variability to consider when managing queues include: a. Arrival and service time variability 9. The objective in managing queues is to find an appropriate balance between the cost of ___ and the cost of ____ a. Capacity, waiting 10. Pooling is an effective strategy because multiple servers help absorb ___ in arrival rate and even out ___ a. Variability, utilization 11. By littles law, if we know the average time spent waiting and arrival rate we can find the a. Average line length 12. All else equals, as the number of servers in a system increase, average number of customers in service will a. Stays the same, average number of customers in service is independent of number of servers 13. The study of queuing theory is important because we live in a ___ economy. a. Service

Supply chain management practice quiz 1. Which of the following may be improvement areas pointed out as the results of conducting an ABC analysis? a. Excess inventory is identified and can be eliminated b. Some items may need to be managed more closely 2. Items with higher velocity will be in an organizations inventory system a. For a shorter time 3. ABC analysis is an application of a. Pareto analysis 4. The goal of inventory is to a. Support the customer demand at the lowest cost 5. The three flows generally taking place in a supply chain include all of these except a. Order flows 6. A certain item has an inventory turnover ratio of 4. What is the inventory flow time in days? Assume there are 365 days per year a. 91.25 7. All of these are potential stages in supply chain except a. Information brokers 8. ABC analysis is a valuable tool in inventory management because it can help us to identify a. Inventory items for which we need to manage very closely b. Which inventory items are creating the largest sales volume c. Inventory items which we may not need to be stocked at all 9. The bullwhip effect occurs when ___ of demand ____ as one moves ____ in a supply chain from retail customer to wholesalers, manufacturers, and raw material suppliers a. Variability, increases, upstream 10. An auto parts store sells many different products. Stocking and managing the right products is costly, so they want to classify al their parts by monthly usage. Brake pads have a monthly demand of 166 and a unit cost of $32.65. The on-hand inventory for this item is 3,320. What is the monthly usage? a. $5419.90...