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  2. Molecular clock - Wikipedia

    en.wikipedia.org/wiki/Molecular_clock

    The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged.The biomolecular data used for such calculations are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins.

  3. Mental chronometry - Wikipedia

    en.wikipedia.org/wiki/Mental_chronometry

    The experimental approach to mental chronometry includes topics such as the empirical study of vocal and manual latencies, visual and auditory attention, temporal judgment and integration, language and reading, movement time and motor response, perceptual and decision time, memory, and subjective time perception. [5]

  4. Lincoln index - Wikipedia

    en.wikipedia.org/wiki/Lincoln_index

    The Lincoln index is a statistical measure used in several fields to estimate the population size of an animal species. Described by Frederick Charles Lincoln in 1930, it is also sometimes known as the Lincoln-Petersen method after C.G. Johannes Petersen who was the first to use the related mark and recapture method.

  5. Estimator - Wikipedia

    en.wikipedia.org/wiki/Estimator

    In statistics, an estimator is a rule for calculating an estimate of a given quantity based on observed data: thus the rule (the estimator), the quantity of interest (the estimand) and its result (the estimate) are distinguished. [1] For example, the sample mean is a commonly used estimator of the population mean. There are point and interval ...

  6. Allan variance - Wikipedia

    en.wikipedia.org/wiki/Allan_variance

    The B 3 bias function is useful to adjust non-overlapping and overlapping variable τ estimator values based on dead-time measurements of observation time τ 0 and time between observations T 0 to normal dead-time estimates. The bias function becomes after analysis (for the N = 2 case)

  7. Time perception - Wikipedia

    en.wikipedia.org/wiki/Time_perception

    The specious present is the time duration wherein a state of consciousness is experienced as being in the present. [11] The term was first introduced by the philosopher E. R. Clay in 1882 (E. Robert Kelly), [12] [13] and was further developed by William James. [13]

  8. Want to Read More in 2025? Start With 25 Minutes a Day - AOL

    www.aol.com/want-read-more-2025-start-185813174.html

    And over the course of a year, we can read a lot of books in our 9,125 minutes—that’s more than 152 hours of reading time. Here are some tips that have helped me read consistently. Quit ...

  9. Bartlett's method - Wikipedia

    en.wikipedia.org/wiki/Bartlett's_method

    [2] [3] A final estimate of the spectrum at a given frequency is obtained by averaging the estimates from the periodograms (at the same frequency) derived from non-overlapping portions of the original series. The method is used in physics, engineering, and applied mathematics. Common applications of Bartlett's method are frequency response ...