**P-value:**0.0157775**F (1, 29) =**6.58**Wilks' Lambda:**0.8152

**P-value:**0.0002967**F (2, 28) =**11.01**Wilks' Lambda:**0.5598

IV B had a significant effect on the result; F (2, 28) = 11.01, p < 0.001.

There was a significant interaction effect between IV A and IV B; F (2, 28) = 47.17, p < 0.001.

Within IV B, pairwise significance was found between Age 15 and Age 10 (p < 0.05).

1) The independent variables should have at least two independent categorical groups.

2) Dependent variable is either an interval or a ratio variable.

3) Dependent variable is normally distributed for each category or group of the independent variables.

4) Variances between groups are equal.

1) Warning Signs in Experimental Design and Interpretation

2) Type I and Type II Errors

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