题号:1题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:某造纸厂2004年产量比2003年增长13.6％，总成本增长了12.9％,则该厂2004年产品单位成本()。HTMLCONTROLForms.HTML:Option.1A、减少6.2％HTMLCONTROLForms.HTML:Option.1B、减少5.15％HTMLCONTROLForms.HTML:Option.1C、增加12.9％HTMLCONTROLForms.HTML:Option.1D、增加1.75％标准答案:A学员答案:A本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:2题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:变量之间的相关程度越低，则相关系数的数值()。HTMLCONTROLForms.HTML:Option.1A、越小HTMLCONTROLForms.HTML:Option.1B、越接近于０HTMLCONTROLForms.HTML:Option.1C、越接近于－１HTMLCONTROLForms.HTML:Option.1D、越接近于１标准答案:B学员答案:B本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:3题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:某连续变量数列，其末组为500以上。又知其邻近组的组中值480，则末组的组中值为()。HTMLCONTROLForms.HTML:Option.1A、520HTMLCONTROLForms.HTML:Option.1B、510HTMLCONTROLForms.HTML:Option.1C、530HTMLCONTROLForms.HTML:Option.1D、540标准答案:A学员答案:A本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:4题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:下面属于结构相对数的有()。HTMLCONTROLForms.HTML:Option.1A、人口出生率HTMLCONTROLForms.HTML:Option.1B、产值利润率HTMLCONTROLForms.HTML:Option.1C、恩格尔系数HTMLCONTROLForms.HTML:Option.1D、工农业产值比标准答案:C学员答案:C本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:5题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:已知某工厂甲产品产量和生产成本有直接关系，在这条直线上，当产量为1000时，其生产成本为30000元，其中不随产量变化的成本为6000元，则成本总额对产量的回归直线方程是()。HTMLCONTROLForms.HTML:Option.1A、у=6000+24хHTMLCONTROLForms.HTML:Option.1B、у=6+0.24хHTMLCONTROLForms.HTML:Option.1C、у=24+6000хHTMLCONTROLForms.HTML:Option.1D、у=24000+6х标准答案:A学员答案:A本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:6题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:计算平均指标最常用的方法和最基本的形式是()。HTMLCONTROLForms.HTML:Option.1A、中位数HTMLCONTROLForms.HTML:Option.1B、众数HTMLCONTROLForms.HTML:Option.1C、算术平均数HTMLCONTROLForms.HTML:Option.1D、调和平均数标准答案:C学员答案:C本题得分:2HTMLCONTROLForms.HTML:Hidden.1HTMLCONTROLForms.HTML:Hidden.1题号:7题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:某造纸厂1999年产量比1