Mobile Survey wrote: > > Dear all, > I am using the following 7-point semantic differential scale scale > (with mid-point anchor too) in my survey. > 1. extremely dissatisfied > 4. neither dissatisfied /nor satisfied > 7. extremely satisfied > I understand that this can be treated as a metric interval scale. The > problem however, is that the scatter plots of this scale with another > 7-point scale on another variable that I am using obviously does not > look like the continuous data that we need to have a good linear > relationship where the Pearson correlation coefficient makes sense. I > had the following question
Data doesn't need to be continuous for there to be a linear effect. For example the number of times you park your car might be linearly related to the number of parking accidents you have. There should be no problems using Pearson's with a well-behaved ordinal scale. Thom . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
