How is productivity different in a goods-producing occupation and in a service- providing occupation?

Productivity for goods-producing tend to have a more simple variables for measurement. This might not be the case for service-providing occupations.

For goods producing occupation, productivity usually measured by two standards alone:  The numbers of goods produced and the numbers of defect.  A company will be considered to have good productivity if it has High number goods produced and the low defects.

For service-providing occupation, this measurement can be a bit more complicated.

Services usually depended on the  type of costumers. A service that considered as 'satisfactory' by one costumers will not necessarily perceive the same way by the other customers.  (For example, let's say that you work work as a barber and give 1 same hair style to two different customers. One customers might completely love your work while the other might completely hate it. Even if you're producing one same hair style )  

This make measuring productivity for service industries become harder compared to manufacturing industry.

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