I have a data set that was collected in form of a liker scale through questioners. Now, i am trying to eliminate or identify outliers in my data. By far, from all that i have been able to search, outliers do not apply to my type of data since its a likert scale, the only possible values are between 1 - 5, and thus no possible value can be an outlier.
What i am looking for as of right now is any thesis in which the scholar has done so (i.e stating that outliers do not apply since data is in 5 point scale). So that i can cite that thesis in my thesis ?