BRAC@UMD

Please input the following parameters, then click "Calculate" button to calculate sample size.

	E(R₀) :	The mean number of false positive
	G₀:	The anticipated number of undifferentially expressed genes in the experiment
	power:	The specified power level for an individual gene, which represents the expected proportion of differentially expressed genes that will be declared as such by the tests
	\|μ₁\| :	The mean difference in log-expression between treatment and control conditions as postulated under the alternative hypothesis H1
	σ_d:	The anticipated standard deviation of the difference in log-expression between treatment and control conditions

|μ₁|/σ_d: Statistical difference between treatment and control conditions under H₁

	n: Sample size for each group
	2n: Total sample size needed for the study