Given the high - dimensionality ( thousands of genes ) and small sample sizes ( often < 30 ) encountered in these datasets , an honest assessment of sampling variability is crucial and can prevent the over - interpretation of spurious results Dna芯片數(shù)據(jù)具有高維(成千上萬個基因)和樣本小(通常小于30 )的特點,為了避免對偽結(jié)果進行分析,準確估計抽樣方差很重要。