How do you calculate doubling time using the Rule of 70? The Rule of 70 is a simplified way of determining the doubling time using the equation, doubling time = 70 / r , where r is the rate of growth for a population in percent. For example, if a population of 10 species were grow...
Mortality rate doubling timeSurvival92D1062F10A theory of population that fails to consider a major determinant of the characteristics of populations is not an adequate theory. Standard texts in population biology and ecology tend to ignore body size as a factor in population dynamics, although ...
Because those percentages are for one side of the mean, doubling them gives the total percentage of the data that falls within a given number of standard deviations bidirectionally. In figure 1, {eq}\mu {/eq} is the mean and {eq}\sigma {/eq} means a standard deviation. Figure 1: A ...
One pair of mice nibbling away at a grain silo wouldn’t empty it of course. But over the course of their two-year lifespan, one pair of mice can produce 70 little mice. Each of which reproduces more, multiplying further in an exponential population curve. By the end of two years, t...
The exponential growth formulas are used to model population growth, to model compound interest, to find doubling time, etcThe exponential decay is helpful to model population decay, to find half-life, etc. The graph of the function in exponential growth is increasing.The graph of the function...
the margin of error is a range of values above and below the actual results. For example, if we get a response in a survey wherein 70% of people have responded “good” and the margin of error is 5%, this means that, generally, 65% to 75% of the population think that the answer...