A.15次方B.16次方C.17次方D.18次方
单项选择题如果居民按报告期价格购买商品需多支出40万元,报告期商品销售额为200万元,则价格指数为()
A.1.2B.0.8C.1.25D.0.83
单项选择题品合格率指标是()
A.比例相对指标B.结构相对指标C.比较相对指标D.强度相对指标
单项选择题某厂某年职工劳动生产率为20000元,是历史最高水平的1.2倍。这里的1.2倍是()
A.比例相对数B.计划完成相对数C.强度相对数D.动态相对数
单项选择题The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed. What is the approximate range of the number of phone calls arriving each hour?()
A.80 B.200 C.20 D.100
单项选择题The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed. What is the cumulative frequency of the third class?()
A.80 B.0.40 C.155 D.75