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  2. Dixon's Q test - Wikipedia

    en.wikipedia.org/wiki/Dixon's_Q_test

    To apply a Q test for bad data, arrange the data in order of increasing values and calculate Q as defined: Q = gap range {\displaystyle Q={\frac {\text{gap}}{\text{range}}}} Where gap is the absolute difference between the outlier in question and the closest number to it.

  3. Quantum efficiency - Wikipedia

    en.wikipedia.org/wiki/Quantum_efficiency

    A graph showing variation of quantum efficiency with wavelength of a CCD chip from Wide Field and Planetary Camera 2, formerly installed on the Hubble Space Telescope.. The term quantum efficiency (QE) may apply to incident photon to converted electron (IPCE) ratio [1] of a photosensitive device, or it may refer to the TMR effect of a magnetic tunnel junction.

  4. Quantum electrodynamics - Wikipedia

    en.wikipedia.org/wiki/Quantum_electrodynamics

    To calculate the probability of any interactive process between electrons and photons, it is a matter of first noting, with Feynman diagrams, all the possible ways in which the process can be constructed from the three basic elements. Each diagram involves some calculation involving definite rules to find the associated probability amplitude.

  5. Q-function - Wikipedia

    en.wikipedia.org/wiki/Q-function

    With the example coefficients tabulated in the paper for =, the relative and absolute approximation errors are less than and , respectively. The coefficients { ( a n , b n ) } n = 1 N {\displaystyle \{(a_{n},b_{n})\}_{n=1}^{N}} for many variations of the exponential approximations and bounds up to N = 25 {\displaystyle N=25} have been released ...

  6. Sequential probability ratio test - Wikipedia

    en.wikipedia.org/wiki/Sequential_probability...

    The SPRT is currently the predominant method of classifying examinees in a variable-length computerized classification test (CCT) [citation needed].The two parameters are p 1 and p 2 are specified by determining a cutscore (threshold) for examinees on the proportion correct metric, and selecting a point above and below that cutscore.

  7. Why Are REIT P/E Ratios So Darn High? - AOL

    www.aol.com/news/2013-10-08-reits-and-pe-ratios...

    REIT P/E ratios and why they don't matter We learn over time that it's all about the bottom line. Businesses are all about turning a profit and posting positive earnings.

  8. Rayleigh–Ritz method - Wikipedia

    en.wikipedia.org/wiki/Rayleigh–Ritz_method

    For example, in the case of beam deflection problems it is wise to use a deformed shape that is analytically similar to the expected solution. A quartic may fit most of the easy problems of simply linked beams even if the order of the deformed solution may be lower.

  9. Recurrence quantification analysis - Wikipedia

    en.wikipedia.org/wiki/Recurrence_quantification...

    RQA can be applied to almost every kind of data. It is widely used in physiology, but was also successfully applied on problems from engineering, chemistry, Earth sciences etc. [2] Further extensions and variations of measures for quantifying recurrence properties have been proposed to address specific research questions. RQA measures are also ...