IPA: /ˌʌn.kɔːˈreɪ.tɪd/
KK: /ʌnˈkɔrəˌleɪtɪd/
Not having a relationship or connection with something else; independent.
The two variables in the study were found to be uncorrelated, meaning changes in one did not affect the other.
Uncorrelated → It is formed from "un-" (meaning not) and "correlate" (from Latin "correlatio", meaning to relate or to bring together). The word "uncorrelated" means not related or not having a mutual relationship.
Think of 'not' ('un-') having a 'relationship' ('correlate') — that's why uncorrelated means there is no relationship.