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  2. Quantile - Wikipedia

    en.wikipedia.org/wiki/Quantile

    That is, x is a k-th q-quantile for a variable X if Pr[X < x] ≤ k/q or, equivalently, Pr[Xx] ≥ 1 − k/q. and Pr[Xx] ≥ k/q. For a finite population of N equally probable values indexed 1, …, N from lowest to highest, the k-th q-quantile of this population can equivalently be computed via the value of I p = N k/q.

  3. Drake equation - Wikipedia

    en.wikipedia.org/wiki/Drake_equation

    f p = 0.2 to 0.5 (one fifth to one half of all stars formed will have planets) n e = 1 to 5 (stars with planets will have between 1 and 5 planets capable of developing life) f l = 1 (100% of these planets will develop life) f i = 1 (100% of which will develop intelligent life) f c = 0.1 to 0.2 (10–20% of which will be able to communicate)

  4. Fixed-point arithmetic - Wikipedia

    en.wikipedia.org/wiki/Fixed-point_arithmetic

    A fixed-point representation of a fractional number is essentially an integer that is to be implicitly multiplied by a fixed scaling factor. For example, the value 1.23 can be stored in a variable as the integer value 1230 with implicit scaling factor of 1/1000 (meaning that the last 3 decimal digits are implicitly assumed to be a decimal fraction), and the value 1 230 000 can be represented ...

  5. Odds ratio - Wikipedia

    en.wikipedia.org/wiki/Odds_ratio

    An odds ratio greater than 1 indicates that the condition or event is more likely to occur in the first group. And an odds ratio less than 1 indicates that the condition or event is less likely to occur in the first group. The odds ratio must be nonnegative if it is defined. It is undefined if p 2 q 1 equals zero, i.e., if p 2 equals zero or q ...

  6. Molar concentration - Wikipedia

    en.wikipedia.org/wiki/Molar_concentration

    Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution. [1] For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase : [2]

  7. Effect size - Wikipedia

    en.wikipedia.org/wiki/Effect_size

    In statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that quantity. It can refer to the value of a statistic calculated from a sample of data, the value of one parameter for a hypothetical population, or to the equation that operationalizes how statistics or parameters lead to the effect size ...

  8. Repeating decimal - Wikipedia

    en.wikipedia.org/wiki/Repeating_decimal

    ⁠ 1 / 200.05 0 ⁠ 1 / 21 ⁠ 0. 047619: 6 ⁠ 1 / 22 ⁠ 0.0 45: 2 ⁠ 1 / 23 ⁠ 0. 0434782608695652173913: 22 ⁠ 1 / 24 ⁠ 0.041 6: 1 ⁠ 1 / 25 ⁠ 0.04 0 ⁠ 1 / 26 ⁠ 0.0 384615: 6 ⁠ 1 / 27 ⁠ 0. 037: 3 ⁠ 1 / 28 ⁠ 0.03 571428: 6 ⁠ 1 / 29 ⁠ 0. 0344827586206896551724137931: 28 ⁠ 1 / 30 ⁠ 0.0 3: 1 ⁠ 1 / 31 ⁠ 0 ...

  9. Factorial - Wikipedia

    en.wikipedia.org/wiki/Factorial

    20: 2 432 902 008 176 640 000: 25 ... The value of 0! is 1, ... Divide all of the exponents by two (rounding down to an integer), recursively compute the product of ...