Hi there! I have a survey with 30 questions with the same answer scale (strongly disagree (1) ..., totally agree(5)). I need to calculate the average of 10 questions, for example, but when I try to create a new variable, I select function Average, but my 30 variables (questions) doesn't appear in the combo box for X, Y, etc. Just appear 3 other random variables like "progress", " latitude of location", "longitude of location". Can you help me, please?
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