The number of individuals in different demographic groups who would have provided usable information if response rates were equivalent. See sample weighting.

加权样本如果回复率相等，那么会提供有用信息的具有不同人口统计特征的个人。

youdao

And so while all of us are wondering is there a moment at which she's going to concede or signal that she's giving up, in fact it had a very positive response with a specific demographic that she's interested in, which is making sure she's doing well with American white suburban women, and with the Latino audience.

NPR: Democrats Feud; McCain Stews over 'Times' Piece