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  2. Lennard-Jones potential - Wikipedia

    en.wikipedia.org/wiki/Lennard-Jones_potential

    The Lennard-Jones potential is a simple model that still manages to describe the essential features of interactions between simple atoms and molecules: Two interacting particles repel each other at very close distance, attract each other at moderate distance, and eventually stop interacting at infinite distance, as shown in the Figure.

  3. Common-method variance - Wikipedia

    en.wikipedia.org/wiki/Common-method_variance

    Using simulated data sets, Richardson et al. (2009) investigate three ex post techniques to test for common method variance: the correlational marker technique, the confirmatory factor analysis (CFA) marker technique, and the unmeasured latent method construct (ULMC) technique.

  4. Zeta potential - Wikipedia

    en.wikipedia.org/wiki/Zeta_potential

    Diagram showing the ionic concentration and potential difference as a function of distance from the charged surface of a particle suspended in a dispersion medium. Zeta potential is the electrical potential at the slipping plane. This plane is the interface which separates mobile fluid from fluid that remains attached to the surface.

  5. Moderation (statistics) - Wikipedia

    en.wikipedia.org/wiki/Moderation_(statistics)

    In statistics and regression analysis, moderation (also known as effect modification) occurs when the relationship between two variables depends on a third variable.The third variable is referred to as the moderator variable (or effect modifier) or simply the moderator (or modifier).

  6. Probability distribution - Wikipedia

    en.wikipedia.org/wiki/Probability_distribution

    This is the definition of a probability density function, so that absolutely continuous probability distributions are exactly those with a probability density function. In particular, the probability for X {\displaystyle X} to take any single value a {\displaystyle a} (that is, a ≤ X ≤ a {\displaystyle a\leq X\leq a} ) is zero, because an ...

  7. Index of dispersion - Wikipedia

    en.wikipedia.org/wiki/Index_of_dispersion

    In probability theory and statistics, the index of dispersion, [1] dispersion index, coefficient of dispersion, relative variance, or variance-to-mean ratio (VMR), like the coefficient of variation, is a normalized measure of the dispersion of a probability distribution: it is a measure used to quantify whether a set of observed occurrences are clustered or dispersed compared to a standard ...

  8. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.The general form of its probability density function is [2] [3] = ().

  9. Hamaker constant - Wikipedia

    en.wikipedia.org/wiki/Hamaker_constant

    The Hamaker constant provides the means to determine the interaction parameter C from the vdW-pair potential, w ( r ) = − C r 6 . {\displaystyle w(r)={\frac {-C}{r^{6}}}.} Hamaker's method and the associated Hamaker constant ignores the influence of an intervening medium between the two particles of interaction.