I was reading something about the distribution of diatonic scales (Transpositions of C major) in the first movement of Mozart's "facile" sonata. With some calculations, it was stated that C major (duh) contributes the most, then G and D major, and then a little bit of D# major.
The article says "F# major has the strongest negative coefficient, which makes sense in that F# may be thought of as among the least correlated scales with C major."
I'm not an expert in music theory by any means. I know how all major scales can be created from transposing another major scale (keeping the same intervals and stuff). I want to know what this correlation means. Does it simply mean that they have very few (2) pitches in common?
Several people mentioned the circle of fifths so I thought I would edit the post and add it here: