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  2. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    It is not correct to divide by 100 and use the percent sign at the same time; it would literally imply division by 10,000. For example, 25% = ⁠ 25 / 100 ⁠ = 0.25, not ⁠ 25% / 100 ⁠, which actually is ⁠ 25 ⁄ 100 / 100 ⁠ = 0.0025.

  3. Ratio - Wikipedia

    en.wikipedia.org/wiki/Ratio

    If the ratio consists of only two values, it can be represented as a fraction, in particular as a decimal fraction. For example, older televisions have a 4:3 aspect ratio , which means that the width is 4/3 of the height (this can also be expressed as 1.33:1 or just 1.33 rounded to two decimal places).

  4. Margin of error - Wikipedia

    en.wikipedia.org/wiki/Margin_of_error

    Thus (after simplifying), ... state, or country, as long as the sampling fraction is small. ... FPC can be calculated using the formula [2]

  5. Relative change - Wikipedia

    en.wikipedia.org/wiki/Relative_change

    For example, we might want to calculate the relative change of −10 to −6. The above formula gives ⁠ (−6) − (−10) / −10 ⁠ = ⁠ 4 / −10 ⁠ = −0.4, indicating a decrease, yet in fact the reading increased. Measures of relative change are unitless numbers expressed as a fraction. Corresponding values of percent change would be ...

  6. Capitalization rate - Wikipedia

    en.wikipedia.org/wiki/Capitalization_rate

    ⁠ $100,000 / $400,000 ⁠ = 0.25 = 25%. ... This real estate appraisal method using the formula directly above is known as direct ... Being a simplified rate of ...

  7. Irreducible fraction - Wikipedia

    en.wikipedia.org/wiki/Irreducible_fraction

    In the first step both numbers were divided by 10, which is a factor common to both 120 and 90. In the second step, they were divided by 3. The final result, ⁠ 4 / 3 ⁠, is an irreducible fraction because 4 and 3 have no common factors other than 1.

  8. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. [1] Expressed as a formula, the mass fraction is:

  9. Lever rule - Wikipedia

    en.wikipedia.org/wiki/Lever_rule

    In chemistry, the lever rule is a formula used to determine the mole fraction (x i) or the mass fraction (w i) of each phase of a binary equilibrium phase diagram.It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and solidus line.