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  2. Population dynamics - Wikipedia

    en.wikipedia.org/wiki/Population_dynamics

    This is the core assumption for geometric populations, because with it we are going to obtain a geometric sequence. Then we define the geometric rate of increase R = b t - d t to be the birth rate minus the death rate. The geometric rate of increase do not depend on time t, because both the birth rate minus the death rate do not, with our ...

  3. Doubling time - Wikipedia

    en.wikipedia.org/wiki/Doubling_time

    For example, with an annual growth rate of 4.8% the doubling time is 14.78 years, and a doubling time of 10 years corresponds to a growth rate between 7% and 7.5% (actually about 7.18%). When applied to the constant growth in consumption of a resource, the total amount consumed in one doubling period equals the total amount consumed in all ...

  4. Geometric distribution - Wikipedia

    en.wikipedia.org/wiki/Geometric_distribution

    In probability theory and statistics, the geometric distribution is either one of two discrete probability distributions: The probability distribution of the number X {\displaystyle X} of Bernoulli trials needed to get one success, supported on N = { 1 , 2 , 3 , … } {\displaystyle \mathbb {N} =\{1,2,3,\ldots \}} ;

  5. Grinold and Kroner Model - Wikipedia

    en.wikipedia.org/wiki/Grinold_and_Kroner_Model

    is the expected inflation rate g {\displaystyle g} is the real growth rate in earnings (note that by adding real growth and inflation, this is basically identical to just adding nominal growth) Δ S {\displaystyle \Delta S} is the changes in shares outstanding (i.e. increases in shares outstanding decrease expected returns)

  6. Exponential growth - Wikipedia

    en.wikipedia.org/wiki/Exponential_growth

    For any fixed b not equal to 1 (e.g. e or 2), the growth rate is given by the non-zero time τ. For any non-zero time τ the growth rate is given by the dimensionless positive number b. Thus the law of exponential growth can be written in different but mathematically equivalent forms, by using a different base.

  7. Geomathematics - Wikipedia

    en.wikipedia.org/wiki/Geomathematics

    Many geophysical data sets have spectra that follow a power law, meaning that the frequency of an observed magnitude varies as some power of the magnitude.An example is the distribution of earthquake magnitudes; small earthquakes are far more common than large earthquakes.

  8. 1 Dividend Giant's Secret Formula - AOL

    www.aol.com/news/2012-03-03-1-dividend-giants...

    The guest on this week's nationally syndicated Motley Fool Money radio show is Charles Duhigg, an award-winning reporter for The New York Times and author of the new book The Power of Habit: Why ...

  9. Kelly criterion - Wikipedia

    en.wikipedia.org/wiki/Kelly_criterion

    Example of the optimal Kelly betting fraction, versus expected return of other fractional bets. In probability theory, the Kelly criterion (or Kelly strategy or Kelly bet) is a formula for sizing a sequence of bets by maximizing the long-term expected value of the logarithm of wealth, which is equivalent to maximizing the long-term expected geometric growth rate.