Levene方差齐性检验计算器
执行Levene检验，判断多个组的方差是否相等，验证方差分析（ANOVA）的方差齐性前提假设。
Levene W
3.5625
df12
df257
Levene W vs Total N
公式
Levene Test
W = [(N-k)/(k-1)] * [SS_between/SS_within]
Tests equal variances using absolute deviations from group means.
计算示例
N=60, 3 groups.
- 01W = (57/2) * (15/120) = 3.56
常见问题
Why vs Bartlett?
More robust to non-normality.
When needed?
Before ANOVA or t-tests assuming equal variances.
Brown-Forsythe?
Uses medians instead of means; even more robust.
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