3 Why is regression analysis inappropriate for ordinal dataS

3. Why is regression analysis inappropriate for ordinal data?

Solution

It is because ordinal data are not necessarily evenly spaced. For example, the first and second place in a race can have times of 9.8 seconds and 9.9 seconds, respectively, but the third place can already by 20 seconds.

Hence, in that case, as regression analysis uses axes of equal intervals, then it is inappropriate to use it for ordinal data.