Imagine you are reading a research article about a study that was done, and was analyzed with an Independent-Measures ANOVA. If the ANOVA Source table and the F-critical are as follows, which APA sentence below is correct? F-critical = 4.07 (found using α=.05) SOURCESSdfMSFobtBetween75.58325.1921.60Within9.3381.17 Total84.9211 Group of answer choicesF(3,8) = 21.60, p > .05, Eta-squared = 0.64F(3,8) = 21.60, p < .05, Eta-squared = 0.89F(3,11) = 4.07, p < .05, Eta-squared = 8.10F(3,11) = 4.07, p > .05, Eta-squared = 0.89

The between (or regression) degrees of freedom is 3 and the within (or error) degrees of freedom is 8.The F observed value is 21.60. Hence, the test statistic F has value of 21.60 with numerator degrees of freedom of 3 and denominator degrees of freedom of 8. The F critical value is 4.07. Using the excel formula, =F.DIST.RT(21.6,3,8), the p-value is 0.0003. The F-critical is 4.07 at level of significance α=.05. The test statistic is greater than the critical value and the p-value is less than the level of significance. Hence, the Independent-Measures ANOVA test is statistically significant. The coefficient of determination is Eta-squared = SSBetween/SSTotal = 75.58/84.92 = 0.89. Thus, the correct APA statement is, “F(3,8) = 21.60, p < .05, Eta-squared = 0.89”.