Continuous data can be measured on a continuum. Think of it as being able to divide a measure by one half, and in half again, and in half again, – to infinity. Contrast continuous data with discrete/attribute data that is binary, or two-state — pass/fail, go/no go, good/bad, and so on.
Use: A Six Sigma practitioner should always strive to work upstream (if necessary) to gather continuous data because with continuous data you can get a handle on the magnitude of the problem. If you only have discrete/attribute data, you can only tell whether it is good or bad, or whether it passes or fails
