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Question is also called Work study is also identified as the 80%20% rule. is also known as a fishbone diagram is also called a swim-lane chart are also called therbligs is the study of an operation or group of related operations for the purpose of analyzing their efficiency and effectiveness so the improvement can be developed is a useful tool to visualize the shape of the distribution of the data is a drawing of the product with all relevant views, onto which the location and frequencies of various defect types are added are operation that the customer considers important and physically change the product or service is a network diagram used in project scheduling is a graphic consisting mostly of block and arrows to portray the relationships among components of a physical system is also known as multi worker activity chart is a block diagram that shows the input-output connections among departments of an organization is allowance for learning a new task is a statistical technique for determining the proportions of time spent by subjects in various defined categorles of activity