The questionnaire consisted of about 100 questions, but I have summarised them into categories and calculated scores according to the response (and hence it is all quantitative data), e.g. Positive attitudes towards fruit & veg; frequency of F&V consumption; diversity of F&V consumption. I would like to analyse whether people are consistent across the categories, i.e. are those in the highest/lowest quartile for attitudes towards F&V also in the highest/lowest quartile for frequency and diversity of consumption. I have looked at the data on excel and colour coded each quartile for each category, so I can see visually that some people track consistently within a quartile, and others less consistently. But I would like a more mathematical way of doing this.

Any advice would be greatly appreciated! I've been searching all day and come up with nothing.

Thanks

Jen