8 Alternative Android App Stores From China. Just as the entire Android system is largely open, so the method of getting apps onto Googleâs mobile OS is also unfettered. In most of the rest of the world, the official Android Market suffices as the primary app source â but in China, the situation has evolved quite differently.
Biodiversity can be measured and monitored at several spatial scales. Alpha Diversity = richness and evenness of individuals within a habitat unit. For example in the figure below, Alpha Diversity of Site A = 7 species, Site B = 5 species, Site C = 7 species. Beta Diversity = expression of diversity between habitats.
With respect to estimation problems , alpha refers to the likelihood that the true population parameter lies outside the confidence interval . Alpha is usually expressed as a proportion. Thus, if the confidence level is 95%, then alpha would equal 1 - 0.95 or 0.05. With respect to hypothesis tests , alpha refers to significance level , the probability of making a Type I error .