anova_welch(A, B, C,..., alpha)
Welch test for k means using significance level alpha.
See also anova_snk anova_bonferroni anova_lsd anova_duncan
Example
A=(14.5, 13.4, 14.1, 15.1)
( 14.5 13.4 14.1 15.1 )
B=(13.2, 12.7, 12.6, 13.9, 13.1)
( 13.2 12.7 12.6 13.9 13.1 )
C=(14.8, 15.2, 14.4, 13.3, 15, 14.8)
( 14.8 15.2 14.4 13.3 15 14.8 )
D=(16.1, 16.2, 14.7, 16.4, 14.2)
( 16.1 16.2 14.7 16.4 14.2 )
anova_welch(A, B, C, D, 0.05)
Welch Robust Test for equality of means.
Ho : Means are equal
Ha : Means are not equal.
Significance level : 0.05 (5.0%)
Results:
Do not reject the null hypothesis. (1.0)
+------------------+------+-------------+----------+
| Welch | | | |
| Statistic | df1 | df2 | Sig. |
+------------------+------+-------------|----------+
| 9.13493 | 3 | 8.22742 | 0.00540 |
+------------------+------+-------------|----------+