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  2. Rate-of-return regulation - Wikipedia

    en.wikipedia.org/wiki/Rate-of-return_regulation

    Rate-of-return regulation (also cost-based regulation) is a system for setting the prices charged by government-regulated monopolies, such as public utilities. It attempts to set prices at efficient (non-monopolistic, competitive) levels [1] equal to the efficient costs of production, plus a government-permitted rate of return on capital.

  3. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. Using renewable energy technologies helps with climate change mitigation, energy security, and also has some economic benefits. [1] Commonly used renewable energy types include solar energy, wind power, hydropower, bioenergy ...

  4. Return on investment - Wikipedia

    en.wikipedia.org/wiki/Return_on_investment

    Return on investment ( ROI) or return on costs ( ROC) is the ratio between net income (over a period) and investment (costs resulting from an investment of some resources at a point in time). A high ROI means the investment's gains compare favourably to its cost. As a performance measure, ROI is used to evaluate the efficiency of an investment ...

  5. Regressive tax - Wikipedia

    en.wikipedia.org/wiki/Regressive_tax

    Neoliberal tax policies typically prioritize reducing taxes for the wealthy and corporations under the belief that such measures stimulate economic growth and investment. This approach often results in regressive tax structures, where the burden falls disproportionately on lower-income individuals and households.

  6. Returns to scale - Wikipedia

    en.wikipedia.org/wiki/Returns_to_scale

    Returns to scale. In economics, the concept of returns to scale arises in the context of a firm's production function. It explains the long-run linkage of increase in output (production) relative to associated increases in the inputs ( factors of production ). In the long run, all factors of production are variable and subject to change in ...

  7. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    The standard deviation σ of X is defined as which can be shown to equal. Using words, the standard deviation is the square root of the variance of X . The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.