In a one-way ANOVA, the FFF-statistic is calculated as:
F=MSwithinMSbetweenF = \frac{MS_{within}}{MS_{between}}F=MSbetweenMSwithin
F=MSbetweenMSwithinF = \frac{MS_{between}}{MS_{within}}F=MSwithinMSbetween
F=SSbetweenSSwithinF = \frac{SS_{between}}{SS_{within}}F=SSwithinSSbetween
F=SStotalMSbetweenF = \frac{SS_{total}}{MS_{between}}F=MSbetweenSStotal