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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.
Directivity. In electromagnetics, directivity is a parameter of an antenna or optical system which measures the degree to which the radiation emitted is concentrated in a single direction. It is the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions. [ 1] Therefore, the ...
The ratio estimator is a statistical estimator for the ratio of means of two random variables. Ratio estimates are biased and corrections must be made when they are used in experimental or survey work. The ratio estimates are asymmetrical and symmetrical tests such as the t test should not be used to generate confidence intervals.
For example, the elections of 1880, 1924, 1972 and 2004 all had four false keys against the incumbent party, giving a predicted winning margin of 6.45 points, whereas these elections were won by respective margins of 0.09 points (1880), 25.22 points (1924), 23.15 points (1972), and 2.46 points (2004).
Quantification of Margins and Uncertainty (QMU) is a decision support methodology for complex technical decisions. QMU focuses on the identification, characterization, and analysis of performance thresholds and their associated margins for engineering systems that are evaluated under conditions of uncertainty, particularly when portions of ...
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The Break-Even Point. The break-even point (BEP) in economics, business —and specifically cost accounting —is the point at which total cost and total revenue are equal, i.e. "even". In layman's terms, after all costs are paid for there is neither profit nor loss. [ 1][ 2] In economics specifically, the term has a broader definition; even if ...
[2] [3] Bode was faced with the problem of designing stable amplifiers with feedback for use in telephone networks. He developed the graphical design technique of the Bode plots to show the gain margin and phase margin required to maintain stability under variations in circuit characteristics caused during manufacture or during operation. [4]