Effective Population Size Calculator. N ef t 1 1 1 1 N0 N1 N2 N3 121 4 4 689 69 1 1 1 1 0058 140 250 110 26 Try this calculation yourselfit can get confusing taking all of these reciprocals. You can also find the level of precision you have in an existing sample.
Effective population size can be defined in several ways. All of the genetic impacts of small population size inbreeding loss of genetic diversity and genetic diversification among replicate populations depend upon the genetically effective population size N e rather than the census size N. How to use this calculator.
N e 4 N f N m N f N m where Nf and Nm are the respective numbers of females and males within a given population.
The difference between the means of two events or groups is termed as the effect size. Take each group Group 1 and Group 2 and input sample means M 1 M 2 and sample standard deviations SD 1 SD 2. This Sample Size Calculator is presented as a public service of Creative Research Systems survey software. There are many different ways to do this depending on what assumptions you make on eg.
