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根据标准GB/T 3358.1～3358.3—93《统计学术语》规定;样本的算术平均数用X,(本刊用);标准差用S,s(本刊用s);t检验用t;F检验用F;卡方检验用x~2(小希);样本量用n;显著性水平用a(小
According to the standard GB / T 3358.1 ~ 3358.3-93 “statistical terms” provisions; the arithmetic mean of the sample with X, (this publication); standard deviation with S, s (s); t test t; F Test with F; chi-square test with x ~ 2 (Xiao Xi); sample size with n; significance level with a