Often , a productivity measure is expressed as the ratio of an aggregate output to a single input or an aggregate input used in a production process, i.e.
The key source of difference between various productivity measures is also usually related to how the outputs and the inputs are aggregated into scalars to obtain such a ratio-type measure of productivity.
Increasing national productivity can raise living standards because more real income improves people’s ability to purchase goods and services, enjoy leisure, improve housing and education and contribute to social and environmental programs. Productivity growth can also help businesses to be more profitable.
