Industrial Engineering and Production Management
Pick up the incorrect statement about advantages of work sampling

No time measuring devices are generally needed
Calculations are easier, method is economical and less time consuming
Permits a fine breakdown of activities and delays
Simultaneous study of many operators may be made by a single observer

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Industrial Engineering and Production Management
Micro motion study is

Motion study observed on enhanced time intervals
Study of man and machine conducted simultaneously
Motion study of a sequence of operations conducted systematically
Analysis of a man-work method by using a motion picture camera with a timing device in the field of view

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