I received this question via email and thought the answer might be sufficiently general to be worth posting here.I have used the Ryff  scale  in my research  . Actually I am confused about the scoring. The  minimum possible  score  is 54 and the maximum score 324. I calculated  this after reversing the negatively worded items. The author of the  scale mailed me saying the scale has no cut-off points score you have  to consider the upper 25% as higher level of psychological well-being  and the scores in the lower 25% as poor psychological well-being. How would I find the upper and lower  25% (I guess called as Quartile)  from just the minimum and maximum score on the scale?
How to find the upper and lower quartiles of the Ryff scale?
test;statistics