1. A study examined the relation between involvement in school-based extracurricular activities and grade-level. Longitudinal assessments were completed for 240 students at grades 1, 2 and 3. The activity rate was examined at each grade level. The results of an analysis of variance are shown below: What can you tell me about this analysis?

QUESTION 1 10 p 1. A study examined the relation between involvement in school-based extracurricular activities and grade-level. Longitudinal assessments were completed for 240 students at grade activity rate was examined at each grade level. The results of an analysis of variance are shown below: What can you tell me about this analysis? Oneway [DataSet1] ANOVA Activities Sum of Squares df Mean Square F Sig Between Groups 669.120 2 334.560 84.445 .000 Within Groups 938.964 237 3962 Total 1608.083 239 Post Hoc Tests Multiple Comparisons Deperident Variable: Activities Tukey: HSA Grade I Grade J Mean Std Error sig 9586 Confidence interval Difference (1-J) Lower bound Upper bound 1.00 2.00 2.70113 31472 .000 1.9589 3.4434 3.00 4.01025' 31472 .000 3.2680 4.7525 2.00 1.00 2.70113' 31472 000 3.4434 -1 9589 3.00 1.30913 31472 000 5669 2.0514 3.00 1.00 4.01025 31472 000 4.7525 3.2680 2.00 -1.30913 31472 000 2.0514 5669 . The mean difference is significant at the .05 level Homogeneous Subsets Activities grade N Subset for alpha = 05 3 3.00 80 10.1828 2.00 80 11.4919 1.00 14.1930 Sig. 1.00 1.00 1.00 Means for groups in homogeneous subsets are displa