the correlation is that out of the people that program in language A, X% of them also program in language B. This can also be expressed as given that someone pr

the correlation is that out of the people that program in language A, X% of them also program in language B. This can also be expressed as given that someone programs in language A, the probability that they program in language B is X. It looks like the table is expressing the correlation in terms of % even though they dont mention that on the table.