An ANOVA in which the number of replicates (sets of identical observations) is restricted to be the same for each factor level (treatment group).
Balanced ANOVA
See also
ANOVAExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Balanced ANOVA." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/BalancedANOVA.html