中文摘要：

从产品质量的视角，以团购网站的酒店销售为背景，研究了品牌和在线产品评论共同对于产品销售的影响。结果发现：产品评分分布偏差对于产品销售具有显著的负向影响，但是品牌的作用能削弱这一负向影响；产品平均评分和评论量较高时，产品评分偏差的负向作用更加明显；品牌与评论效价对销售的影响具有正向的加强作用。

英文摘要：

Based on the perspective of product quality, this paper explores the question that how online product reviews and brand affect product sales together in group buying websites. The results demonstrate that： product distribution deviation imposes a significant negative impact on product sales, but brand can weaken the negative impact; product ratings and reviews number strength the negative effect of product distribution deviation on sales; brand strength has a positive interaction effect with the valence of reviews in terms of their effect on sales.