Question 1
If historical experience data are so widely available and so easy to obtain, why aren't they more widely used to set labour standards?Question 2
Define the average observed time.Answer 1
Historical experience data were not obtained in a controlled environment. These data are not objective and have unknown levels of accuracy. It is unknown whether they represent a reasonable work pace or not, or whether unusual occurrences are included.Answer 2
The actual average task time is computed by dividing the sum of the times recorded to perform each element by the number of observations. It is adjusted for unusual influences.