What would you like to understand?

Total variation in the observed scores is split into two parts: within-group variation, which is caused by differences among individuals inside the same group, and between-group variation, which is associated with differences among the groups themselves.

Conditions: The data are organized into multiple groups.; One is analyzing variation in a measured response across those groups.

Total variation in the observed scores is split into two parts: within-group variation, which is caused by differences among individuals inside the same group, and between-group variation, which is associated with differences among the groups themselves.

Conditions: The data are organized into multiple groups.; One is analyzing variation in a measured response across those groups.

The null hypothesis states that the mean reaction time for all three groups is the same. Symbolically, it is expressed as $H_0: \mu_1 = \mu_2 = \mu_3$.

Conditions: There are exactly three groups in the displayed example.; The compared quantity is mean reaction time.

The null hypothesis states that the mean reaction time for all three groups is the same. Symbolically, it is expressed as $H_0: \mu_1 = \mu_2 = \mu_3$.

Conditions: There are exactly three groups in the displayed example.; The compared quantity is mean reaction time.