noun
valid response; valid answer
Used in surveys, questionnaires, and data collection to refer to responses that meet the criteria for inclusion in analysis.
アンケートの有効回答数は500件でした。
The number of valid responses to the survey was 500.
無効回答を除いて、有効回答のみを集計します。
We will exclude invalid responses and tally only the valid ones.
Compound of 有効 (valid) and 回答 (response).