Finds inter-quartile range of the data = {75th percentile - 25th percentile}.
查找范围四分位间的数据= {75百分位 - 第25个百分}。
用法----------Usage----------
iqr(x)
参数----------Arguments----------
参数:x
x is a vector for which IQR has to be found.
x是一个向量,其中四分被发现。
值----------Value----------
Returns a numeric value representing the difference of 75th percentile and 25th percentile of the vector. It is used for normalization across the chips - basic assumption is that net differential expression of the middle half of the genes in microarray experiment is zero, which is conservative assumption as typically only 5-10 differential expression.
返回一个数字值,表示向量的第75百分位和第25百分位的差异。它可用于整个芯片标准化 - 基本假设是,净差异表达的基因芯片实验中一半是零,这是保守的假设通常只有5-10的差异表达。