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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. 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.

  6. Overshoot (signal) - Wikipedia

    en.wikipedia.org/wiki/Overshoot_(signal)

    In control theory, overshoot refers to an output exceeding its final, steady-state value. [2] For a step input, the percentage overshoot (PO) is the maximum value minus the step value divided by the step value. In the case of the unit step, the overshoot is just the maximum value of the step response minus one.

  7. Cutoff frequency - Wikipedia

    en.wikipedia.org/wiki/Cutoff_frequency

    Electronics. In electronics, cutoff frequency or corner frequency is the frequency either above or below which the power output of a circuit, such as a line, amplifier, or electronic filter has fallen to a given proportion of the power in the passband. Most frequently this proportion is one half the passband power, also referred to as the 3 dB ...

  8. 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.

  9. 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).

  10. Relative change - Wikipedia

    en.wikipedia.org/wiki/Relative_change

    Percentage change. A percentage change is a way to express a change in a variable. It represents the relative change between the old value and the new one. [6] For example, if a house is worth $100,000 today and the year after its value goes up to $110,000, the percentage change of its value can be expressed as.

  11. Fresnel equations - Wikipedia

    en.wikipedia.org/wiki/Fresnel_equations

    If we do likewise with the formula for r p ‍, the result is easily shown to be equivalent to r p = tan ⁡ ( θ i − θ t ) tan ⁡ ( θ i + θ t ) . {\displaystyle r_{\text{p}}={\frac {\tan(\theta _{\text{i}}-\theta _{\text{t}})}{\tan(\theta _{\text{i}}+\theta _{\text{t}})}}.}