I have a set of variables measured on an ordinal scale. The format is LIKERT ranging from 1 ("Daily") to 6 ("less than once a year"). I think it is OK to analyze the data as interval scale data, then being able to use parametric tests. The underlying scale is logarithmic, meaning that 1 is "daily"; 2 represents half the value of 1; 3 represents half the value of 2; 4 represents half the value of 3, etc. So, if I look at it graphically it makes a descending curve with the "bow" on the downside.

I have used Compute variables > Arithmetic > ln10 to make the data linear, but I am unsure which way the "bow" is manipulated and in which direction the new scale goes. I have searched for "logarithmic recoding" on this forum and elsewhere, but can't find any answers.

Anyone in here who knows?

Users with solutions will get a "thanks".

I have used Compute variables > Arithmetic > ln10 to make the data linear, but I am unsure which way the "bow" is manipulated and in which direction the new scale goes. I have searched for "logarithmic recoding" on this forum and elsewhere, but can't find any answers.

Anyone in here who knows?

Users with solutions will get a "thanks".

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