Factorial ANOVA with aggressive behavior in teenage boys

Factorial ANOVA Continuation
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I would perform the factorial ANOVA with aggressive behavior in teenage boys as the dependent variable (factor), and violent video games (high-violence video games, moderate violence intensity game vs. Non violent games and adult involvement (High adult involvement vs. No adult involvement) influence as the independent variables. As there is more than one factor the experiment uses a factorial design approach. As such, the experiment has two factors, but the violent video game has three levels (elements), which indicate the intensity of violence.
While various statistical packages perform the two-factor ANOVA, for both the equal and unequal sample sizes, the analysis is more complicated when dealing with unequal sizes. The complication with the unequal sizes is linked to the need to weigh the sums of squares of the factors with the sample sizes when their sum is not the total sum of squares), further complicating the calculations and contrasts of hypothesis. There are 6 (3 x 2) different treatment groups There are 2 (3-1) degrees of freedom (d.f) for the violent video games and adult involvement 1 d.f (2-1). The cell smaller size is six, for the 6 cells in the experiments.
When designing the factorial analysis of the variance, the design ought to be equal size sizes. I assumed that it will be possible to collect data and analysis would be based on a sample size of 60 subjects and since they will be randomness there will be low risk of bias. The effect of the sample size affects the reliabi...