При нормировании технологической операции (обработка де
When rationing a technological operation (machining a part on a machine), the following results were obtained:
Operation execution time Number of workers
28 30 32 34 36 38 40 42
15 17 16 18 10 8 6 5
Determine the arithmetic mean and the coefficient of variation of the operation execution time.
Find the fashion and median.
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