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  2. Gross margin - Wikipedia

    en.wikipedia.org/wiki/Gross_margin

    Gross margin is the difference between revenue and cost of goods sold (COGS), divided by revenue. Gross margin is expressed as a percentage. Generally, it is calculated as the selling price of an item, less the cost of goods sold (e.g., production or acquisition costs, not including indirect fixed costs like office expenses, rent, or ...

  3. Profit margin - Wikipedia

    en.wikipedia.org/wiki/Profit_margin

    Profit margin is a financial ratio that measures the percentage of profit earned by a company in relation to its revenue. Expressed as a percentage, it indicates how much profit the company makes for every dollar of revenue generated. Profit margin is important because this percentage provides a comprehensive picture of the operating efficiency ...

  4. Phase margin - Wikipedia

    en.wikipedia.org/wiki/Phase_margin

    Phase margin. In electronic amplifiers, the phase margin (PM) is the difference between the phase lag φ (< 0) and -180°, for an amplifier's output signal (relative to its input) at zero dB gain - i.e. unity gain, or that the output signal has the same amplitude as the input. For example, if the amplifier's open-loop gain crosses 0 dB at a ...

  5. Link budget - Wikipedia

    en.wikipedia.org/wiki/Link_budget

    Link budget. A link budget is an accounting of all of the power gains and losses that a communication signal experiences in a telecommunication system; from a transmitter, through a communication medium such as radio waves, cable, waveguide, or optical fiber, to the receiver. It is an equation giving the received power from the transmitter ...

  6. Margin of error - Wikipedia

    en.wikipedia.org/wiki/Margin_of_error

    For a confidence level, there is a corresponding confidence interval about the mean , that is, the interval [, +] within which values of should fall with probability . ...

  7. Contribution margin - Wikipedia

    en.wikipedia.org/wiki/Contribution_margin

    Contribution margin (CM), or dollar contribution per unit, is the selling price per unit minus the variable cost per unit. "Contribution" represents the portion of sales revenue that is not consumed by variable costs and so contributes to the coverage of fixed costs. This concept is one of the key building blocks of break-even analysis.

  8. Hinge loss - Wikipedia

    en.wikipedia.org/wiki/Hinge_loss

    In machine learning, the hinge loss is a loss function used for training classifiers. The hinge loss is used for "maximum-margin" classification, most notably for support vector machines (SVMs). [ 1] For an intended output t = ±1 and a classifier score y, the hinge loss of the prediction y is defined as. Note that should be the "raw" output of ...

  9. Operating margin - Wikipedia

    en.wikipedia.org/wiki/Operating_margin

    Operating margin. In business, operating margin —also known as operating income margin, operating profit margin, EBIT margin and return on sales ( ROS )—is the ratio of operating income ("operating profit" in the UK) to net sales, usually expressed in percent. Net profit measures the profitability of ventures after accounting for all costs.