The quaternary sector of the economy consists of intellectual activities often associated with technological innovation. Two examples of quaternary activities are:
This includes software development, data processing, and consultancy services. IT professionals work with information and knowledge to create solutions and products.
This involves scientific research and the development of new products and technologies. Scientists, researchers, and engineers in R&D are focused on creating new knowledge and applications.
For example, the formula for the rate of growth in R&D expenditure can be represented as:
\[ \text{Growth Rate} = \frac{{\text{Expenditure}_{\text{new}} - \text{Expenditure}_{\text{old}}}}{{\text{Expenditure}_{\text{old}}}} \times 100 \]