I want to calculate the median of a scale (consisting of multiple items) via SPSS in the following case:
I have a questionnaire in which the participants are supposed to rate 4 Items (v16-19) regarding their use of media according to their frequency (never – often/ SPSS: 0, 1, 2, 3). In order to do so, I first calculated the median for every participant (e.g. v20=Med.3(v16,v17,v18,v19)). After this, I calculated the median, Q1 and Q3 out of those 60 different medians.
Is this correct? Or do I calculate the median of a scale differently? E. g. by (somehow...) putting all the data I gathered from the 4 items into one variable and then calculate the median out of this data?
Unfortunately, I need the median and not the mean.
Help would be greatly appreciated.