The result of a One-Way ANOVA for total stress symptoms among four...

The result of a One-Way ANOVA for total stress symptoms among four groups of teachers (pre-k, elementary, middle, high school) was F(3, 117) = 3.827, p < .05. The corresponding effect size was η2 = .265. What can be concluded about these results?

Group of answer choices

For total stress symptoms, there was not significant difference among groups.

For total stress symptoms, there was a significant difference among groups. The effect size was small.

For total stress symptoms, there was a significant difference among groups. The effect size was medium.

For total stress symptoms, there was a significant difference among groups. The effect size was very large.