I have data that shows intent to purchase a car dependent on country (measured on 7 point Likert scale). So for example, I have 50 participants that rated how likely they would be to purchase a car made in the US, Japan or Germany. I also measured their rating (again on a 7 point Likert scale) of various car criteria (visual appeal, performance, safety etc.) When I work out the means for each country for intent to purchase I can see a difference in the means and I can also see a consistent different in the means of the car criteria ratings by country. When I run an ANOVA test this comes out as not statistically significant. Am I running the wrong test for this?
Edit: My data has been weighted to make it more representative of the population.