#13 NOMINAL, ORDINAL, INTERVAL & RATIO DATA

Data can vary in their nature. We differentiate between different levels. They could be either nominal, ordinal, interval or on ratio level. This really matters with regards to the statistical method you want you use.
All slides of the entire series can be downloaded here: armintrost.de/...

[@dejal.3606]

I think Likert Scale (Summated Item) should not considered an Interval scale.

[@dejal.3606]

We cannot just simple assign number to attitude or feeling, right???