(18C) Work Sampling Survey Size

11272018, 03:45 PM
(This post was last modified: 11272018 03:45 PM by SlideRule.)
Post: #1




(18C) Work Sampling Survey Size
extract from the Working with your Business Consultant Professional Calculator series,
Manufacturing Consultant … formula SSIZE=NORM^2÷(%ACC÷100)^2×(1#OCC÷#OBS)÷#OCC×#OBS where SSIZE = sample size NORM = normal distribution value %ACC = desired accuracy #OCC = number of occurrences #OBS = number of observations Work sampling can be used to collect information about work flow and idle time. The formula below helps determine the number of operations needed to assure that your work sampling will give you accurate results. This formula assumes that you have made a small number of observations and thus have a preliminary estimate of the survey results. SlideRule 

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