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【多选题】
互联网金融理财之所以打开了被传统金融机构所忽视的长尾市场，是因为（）A.
各种互联网金融理财产品基本上一元即可申购，这使得低收入人群的小额资金也可以享受到传统金融机构中只有中高端客户才可以享受到的资金收益率。
B.
各种互联网金融理财产品的设计均以操作简单、便捷为原则，相比传统理财产品，金融理财知识匮乏、购买金融理财产品存在困难和障碍的居民也可得到自助理财服务。
C.
各种互联网金融理财产品推出各种定制化服务，丰富了居民投资理财的选择范围，个性化和碎片化的理财服务需求也能够得到满足。
D.
互联网理财 降低了逆向选择和道德风险发生的概率，降低了金融市场的交易成本和搜寻匹配成本。
E.
互联网金融理财造成了鲶鱼效应，给银行业造成了巨大的竞争压力，推动了中国的利率市场化进程。
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【多选题】Which of the following statement about quota sampling and stratified sampling is/are true?
A.
In both of them, there exist distinctive subgroups in the population.
B.
They both need a sampling frame of each of the subgroups of the target population.
C.
In both of them,researchers want to ensure that all strata are included in the sample in order to enhance the representativeness of the sample and/or to enable comparisons between strata.
D.
Stratified sampling does not need a sampling frame to generate a stratified sample.
E.
In both of them,once the sample number of each subgroup is defined, samples are drawn in simple random sampling or systematic sampling method.
【单选题】______________ sampling is a form of probability sampling in which sampling units are divided into mutually exclusive and collectively exhaustive subpopulations.
A.
Judgment sampling
B.
Quota sampling
C.
Simple random
D.
Convenience
E.
Cluster
【简答题】C套传票 行次二 页码:8页至17页
【简答题】有人说:“电容器带电多电容就大,带电少电容就小,不带电则没有电容。”这种说法对吗?为什么?
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