IPA: /nɒnˌkɔːrəˈleɪʃən/
KK: /nɑnˌkɔrɪˈleɪʃən/
A situation where two or more things do not show a relationship or connection with each other.
The study found a noncorrelation between the amount of sleep and test scores.
Noncorrelation → It is formed from "non-" (meaning not) and "correlatio" (from Latin, meaning relationship or connection). The word "noncorrelation" means the absence of a relationship or connection between two or more variables.
Think of 'not' ('non-') having a 'relationship' ('correlatio') — that's why noncorrelation means there is no relationship.