问题
选择题
— What are the twin sisters doing?
— ___________________[ ]
A. They're joging.
B. She's jogging.
C. They're jogging.
D. She's joging.
答案
答案:C
— What are the twin sisters doing?
— ___________________[ ]
A. They're joging.
B. She's jogging.
C. They're jogging.
D. She's joging.
答案:C
小红的奶奶开了一个金键牛奶销售店,主要经营“金键学生奶”、“金键酸牛奶”、“金键原味奶”,可奶奶经营不善,经常有品种的牛奶滞销(没卖完)或脱销(量不够),造成了浪费或亏损,细心的小红结合所学的统计知识帮奶奶统计了一个星期牛奶的销售情况,并绘制了下表:
金键学生奶______,金键酸牛奶______,金键原味奶______; 根据计算结果分析,你认为哪种牛奶销量最高______; (2)计算各品种牛奶的方差(保留两位小数),并比较哪种牛奶销量最稳定.金键学生奶______,金键酸牛奶______,金键原味奶______; (3)根据计算结果分析,你认为哪种牛奶销量最稳定______. |