Quote:
Originally Posted by Nicketas  Convenience and a tipping point. One person started it, then it spread... |
Then the question is:
When we have to rate something ourself, should we use a 1-5 scale, a 1-9 scale, a 1-10 scale or maybe a 1-20 scale?
Which arguments are there for one over another?
The Wikipedia article says that 1-5 sclaes are called Likart scale. But it doesn't realy say why you should use it.