下面還有幾種不同的方法可以用來比較資料間的差異性

Empirical Guidelines for Symmetric Bell-Shaped Distributions
Approximately
        68% of the data lie within $\overline{x} \pm s$
        95% of the data lie within $\overline{x} \pm 2s$
        99.7% of the data lie within $\overline{x} \pm 3s$
一般而言, for k>1, 則 $(\overline{x}-ks, \overline{x}+ks)$至少會包含資料的 $\displaystyle(1-\frac{1}{k^2})$ 部份.

Sample range
此項為觀察值分布的區間長度 $\mbox{Sample range}=\mbox{Largest observation}-\mbox{Smallest observation}$

Sample interquartile range 四分位差
四分位差為 Q3-Q1, $\mbox{Sample interquartile range}=\mbox{Third quartile}-\mbox{First quartile}$