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  2. Dimensionless quantity - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_quantity

    In statistics the coefficient of variation is the ratio of the standard deviation to the mean and is used to measure the dispersion in the data. It has been argued that quantities defined as ratios Q = A / B having equal dimensions in numerator and denominator are actually only unitless quantities and still have physical dimension defined as ...

  3. List of dimensionless quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_dimensionless...

    This is a list of well-known dimensionless quantities illustrating their variety of forms and applications. The tables also include pure numbers, dimensionless ratios, or dimensionless physical constants; these topics are discussed in the article.

  4. Category:Dimensionless quantities - Wikipedia

    en.wikipedia.org/wiki/Category:Dimensionless...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  5. International System of Quantities - Wikipedia

    en.wikipedia.org/wiki/International_System_of...

    A quantity of dimension one is historically known as a dimensionless quantity (a term that is still commonly used); all its dimensional exponents are zero and its dimension symbol is . Such a quantity can be regarded as a derived quantity in the form of the ratio of two quantities of the same dimension.

  6. Keulegan–Carpenter number - Wikipedia

    en.wikipedia.org/wiki/Keulegan–Carpenter_number

    In fluid dynamics, the Keulegan–Carpenter number, also called the period number, is a dimensionless quantity describing the relative importance of the drag forces over inertia forces for bluff objects in an oscillatory fluid flow. Or similarly, for objects that oscillate in a fluid at rest.

  7. Nondimensionalization - Wikipedia

    en.wikipedia.org/wiki/Nondimensionalization

    Nondimensionalization is the partial or full removal of physical dimensions from an equation involving physical quantities by a suitable substitution of variables.This technique can simplify and parameterize problems where measured units are involved.

  8. Category:Dimensionless numbers - Wikipedia

    en.wikipedia.org/wiki/Category:Dimensionless_numbers

    Pages in category "Dimensionless numbers" The following 57 pages are in this category, out of 57 total. ... Statistics; Cookie statement; Mobile view ...

  9. Mean absolute difference - Wikipedia

    en.wikipedia.org/wiki/Mean_absolute_difference

    The relative mean absolute difference quantifies the mean absolute difference in comparison to the size of the mean and is a dimensionless quantity. The relative mean absolute difference is equal to twice the Gini coefficient which is defined in terms of the Lorenz curve. This relationship gives complementary perspectives to both the relative ...