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Calculating normal and standard time for a task

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Peter Rourke, a loan processor at Wentworth Bank, has been timed performing four work elements, with the results shown in the following table. The allowances for tasks such as tis are personal. 7%; fatigue, 10%; and delay, 3%

TASK PERFORMANCE OBSERVATIONS (MINUTES)
ELEMENT RATING (%) 1 2 3 4 5

1 110 5 4 6 4 4
2 95 6 8 7 6 7
3 90 6 4 7 5 5
4 85 1.5 1.8 2.0 1.7 1.5

a) What is the normal time?
b) What is the standard time?

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This solution depicts the steps to estimate the normal and standard time for the given task.

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a) What is the normal time?

Average observed time for task element 1=(5+4+6+4+4)/5=4.60 minutes
Average observed time for task element 2=(6+8+7+6+7)/5=6.80 minutes
Average observed time for task element 3=(6+4+7+5+5)/5=5.40 ...

Solution provided by:
Lokesh Jain, MSc
Education
  • BEng (Hons) , Birla Institute of Technology and Science, India
  • MSc (Hons) , Birla Institute of Technology and Science, India
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