07: The following table reports the average prestige score (scale (-low prestige; 100-high prestige) by educational title. Describe results and answer these questions: a) which is the dependent variable? b) Is the difference between primary and lower secondary statistically significant? Educational title mean N Primary standard deviation 30.8 418 Lower secondary 14.51 33.0 1839 Upper secondary 15.42 46.8 1727 Tertiary 17.68 65.2 783 15.77