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25 February, 13:21

A methods and measurements analyst needs to develop a time standard for a certain task. In a preliminary study, he observed one of his workers perform this task five times, with the following results: Observation 1 2 3 4 5 Time (Seconds) 84 76 80 84 76 What is the standard time for this task if the employee worked at a 25 percent faster pace than average and an allowance of 20 percent of job time is used?

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  1. 25 February, 15:53
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    120 seconds (2 minutes)

    Explanation:

    Standard time = normal time + allowances

    The normal time is computed using the following formula

    normal time = observed time X ratings/100

    observed time mean = (84+76+80+84+76) / 5 = 80

    A person who is 25% faster has a rating of 125%

    normal time = 80 X 125/100 = 100 seconds

    Allowances is calculated as a percentage of normal time

    Allowance = 80 X 20/100 = 20 seconds

    Standard time = 100 + 20 = 120 seconds
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