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INTRODUCTION TO WORK MEASUREMENT
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HISTORICAL DEVELOPMENT OF WORK MEASUREMENT
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accuracy achieved action actual analysis application appropriate assessed average basic bench-marks binomial distribution break-points calculated cent confidence Chapter chart Clerical considered control chart cost cycle-time defined derived described developed effect elements equation estimating example factors formula Frank Bunker Gilbreth Gantt Chart graph grasp hand handle independent variables individual International MTM Directorate machine maintenance manual means ment mental method Methods-Time Measurement minutes motion move necessary nomogram normal distribution number of cycles number of observations object obtained occur operator output performance plotted practitioner procedure production study purpose random rated activity sampling ratio recorded regression regression analysis relaxation allowance sheet speed standard deviation standard error standard hours standard rating statistical stop-watch supervisor sweep-hand synthetic data systematic sampling Table task techniques Term number therbligs time-interval United Kingdom variables Work-Factor work-measurement work-study workers