The relation between a proportional change in inputs to a productive process and the resulting proportional change in output. If an n per cent rise in all inputs produces an n per cent increase in output, there are constant returns to scale. If output rises by a larger percentage than inputs, there are increasing returns to scale. If output rises by a smaller percentage than inputs, there are decreasing returns to scale.

• New York Stock Exchange
• NHS
• NIC
• NIEO
• NIESR
• Nikkei index
• no arbitrage
• noise, white
• nominal anchor
• nominal protection
• nominal variable
• nominee holding
• non-accelerating inflation rate of unemployment
• non-contributory pension scheme
• non-discrimination
• non-durables, consumer
• non-executive director
• non-inflationary growth
• non-intersecting curves
• non-linear function
• non-marketable debt
• non-marketed economic activities
• non-monetary job characteristics
• non-negative
• non-parametric statistics