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  2. Coefficient of inbreeding - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_inbreeding

    The coefficient of inbreeding (COI) is a number measuring how inbred an individual is. Specifically, it is the probability that two alleles at any locus in an individual are identical by descent from a common ancestor of the two parents.

  3. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    Also, some fractions (such as 1 ⁄ 7, which is 0.14285714285714; to 14 significant figures) can be difficult to recognize in decimal form; as a result, many scientific calculators are able to work in vulgar fractions or mixed numbers.

  4. Truncated mean - Wikipedia

    en.wikipedia.org/wiki/Truncated_mean

    A truncated mean or trimmed mean is a statistical measure of central tendency, much like the mean and median.It involves the calculation of the mean after discarding given parts of a probability distribution or sample at the high and low end, and typically discarding an equal amount of both.

  5. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which run is the horizontal distance (not the distance along the slope) and rise is the vertical distance.

  6. AP Statistics - Wikipedia

    en.wikipedia.org/wiki/AP_Statistics

    One of the College Board's more recent additions, [1] the AP Statistics exam was first administered in May 1996 to supplement the AP program's math offerings, which had previously consisted of only AP Calculus AB and BC. [2] In the United States, enrollment in AP Statistics classes has increased at a higher rate than in any other AP class. [3]

  7. Filter factor - Wikipedia

    en.wikipedia.org/wiki/Filter_factor

    The number of f-stops of light reduction, given a filter factor, may be calculated using the formula: ⁡ Most calculators do not have a function. An equivalent calculation is:

  8. AP Chemistry - Wikipedia

    en.wikipedia.org/wiki/AP_Chemistry

    Part A, lasting 55 minutes, allowed the use of calculators, Part B, lasting 40 minutes, also allowed for calculators. [4] The first problem in Part A concerned equilibrium related to solubility, acids and bases, or pressure/concentration. The first question of Part B was a chemical equation question in which 3 scenarios were presented and the ...

  9. Bit error rate - Wikipedia

    en.wikipedia.org/wiki/Bit_error_rate

    The BER is the likelihood of a bit misinterpretation due to electrical noise ().Considering a bipolar NRZ transmission, we have = + for a "1" and () = + for a "0".Each of () and () has a period of .