Examlex
If the coefficient of correlation r = -.81,the standard deviations of x and y are 20 and 25,respectively,then cov(x,y)must be -405.0.
Genetic Drift
A mechanism of evolution that involves random fluctuations in the frequencies of alleles (variations of a gene) in a population, particularly in small populations.
Inbreeding Depression
A decrease in biological fitness and health in a population due to breeding between closely related individuals.
Survivorship Curves
Graphical representations that show the number of individuals of a species or a population that survive at each age.
Population Cycles
Oscillations in the size of a biological population as a result of changes in predation, resources, and other factors.
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