正确答案:
题目:(2)请分别从优等品数量、平均数与方差三方面对A、B两种技术作出评价;从市场销售的角度看,你认为推广哪种种植技术较好.
解析:(2)从优等品数量的角度看,因A技术种植的西瓜优等品数量较多,所以A技术较好; ·············································· 4分 从平均数的角度看,因A技术种植的西瓜质量的平均数更接近5kg,所以A技术较好; ·············································· 5分 从方差的角度看,因B技术种植的西瓜质量的方差更小,所以B技术种植的西瓜质量更为稳定; 6分 从市场销售角度看,因优等品更畅销,A技术种植的西瓜优等品数量更多,且平均质量更接近5kg,因而更适合推广A种技术··························································································································· 8分
学习资料的答案和解析: