IPA: /ɪnˈfɔːrmətɪvnəs/
KK: /ɪnˈfɔrmətɪvnəs/
The quality or state of providing useful or interesting information.
The informativeness of the report helped the team make better decisions.
Informativeness → It is formed from "inform" (from Latin "informare", meaning to shape or form) and "-ness" (a suffix indicating a state or quality). The word "informativeness" refers to the quality of providing information or being informative.
Think of the word 'inform' which means to shape or provide knowledge, and remember that 'informativeness' is the quality of being able to provide that knowledge.