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  2. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    To calculate a percentage of a percentage, convert both percentages to fractions of 100, or to decimals, and multiply them. For example, 50% of 40% is: 50 / 100 × 40 / 100 = 0.50 × 0.40 = 0.20 = 20 / 100 = 20%.

  3. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    As a formula, a duty cycle (%) may be expressed as: [2] Equally, a duty cycle (ratio) may be expressed as: where is the duty cycle, is the pulse width (pulse active time), and is the total period of the signal. Thus, a 60% duty cycle means the signal is on 60% of the time but off 40% of the time.

  4. On-base percentage - Wikipedia

    en.wikipedia.org/wiki/On-base_percentage

    On-base percentage is calculated using this formula: O B P = H + B B + H B P A B + B B + H B P + S F {\displaystyle OBP={\frac {H+BB+HBP}{AB+BB+HBP+SF}}} where

  5. Exponential decay - Wikipedia

    en.wikipedia.org/wiki/Exponential_decay

    Exponential decay. A quantity undergoing exponential decay. Larger decay constants make the quantity vanish much more rapidly. This plot shows decay for decay constant ( λ) of 25, 5, 1, 1/5, and 1/25 for x from 0 to 5. A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.

  6. Pythagorean expectation - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_expectation

    The formula is used with an exponent of 2.37 and gives a projected winning percentage. That winning percentage is then multiplied by 17 (for the number of games played in an NFL season from 2021), to give a projected number of wins. This projected number given by the equation is referred to as Pythagorean wins.

  7. Percentile - Wikipedia

    en.wikipedia.org/wiki/Percentile

    In statistics, a k-th percentile, also known as percentile score or centile, is a score below which a given percentage k of scores in its frequency distribution falls ("exclusive" definition) or a score at or below which a given percentage falls ("inclusive" definition).

  8. Percent sign - Wikipedia

    en.wikipedia.org/wiki/Percent_sign

    The percent sign % (sometimes per cent sign in British English) is the symbol used to indicate a percentage, a number or ratio as a fraction of 100. Related signs include the permille (per thousand) sign ‰ and the permyriad (per ten thousand) sign ‱ (also known as a basis point), which indicate that a number is divided by one thousand or ten thousand, respectively.

  9. Approximation error - Wikipedia

    en.wikipedia.org/wiki/Approximation_error

    Let ε >0 be the desired absolute error. First, use REL with relative error η= 1/2; find a rational number r1 such that | v - r1 | ≤ | v |/2, and hence |v| ≤ 2 | r1 |. If r1 =0, then v =0 and we are done. Since REL is polynomial, the encoding length of r1 is polynomial in the input.

  10. Sieve analysis - Wikipedia

    en.wikipedia.org/wiki/Sieve_analysis

    On the graph the sieve size scale is logarithmic. To find the percent of aggregate passing through each sieve, first find the percent retained in each sieve. To do so, the following equation is used, %Retained = ×100%. where W Sieve is the mass of aggregate in the sieve and W Total is the total mass of the aggregate.

  11. Bayes' theorem - Wikipedia

    en.wikipedia.org/wiki/Bayes'_theorem

    The corresponding formula in terms of probability calculus is Bayes' theorem, which in its expanded form involving the prior probability/base rate of only , is expressed as: P ( A | B ) = P ( B | A ) a ( A ) P ( B | A ) a ( A ) + P ( B | ¬ A ) a ( ¬ A ) . {\displaystyle P(A\vert B)=P(B\vert A){\frac {a(A)}{P(B\vert A)\,a(A)+P(B\vert eg A ...