Could really do with some help from someone with more stats expertise than I have.
I have some data relating to a customer survey along a range of measures which are consolidated into a number of scales. Participants rated the company and its competitor along all measures.
I transformed the raw data by squaring it to reduce skew and kurtosis. I now want to analyze the differences between the measures by the company and its competitor using the delta. I used the delats from the transformed variables, but as I have skew in the delta scores do I transform the data again or should I have taken the difference on the raw, untransformed scores, and then transformed the deltas to reduce skew and kurtosis?
Also, given that I’ve got negative and positive deltas, could you recommend an appropriate method to transform the data?
Thanks in advance for any help you can give.