各位大虾：控制样本和对照样本有什么不同？？

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我在做实证分析中，将数据分为三组，其中两组符合一定条件，剩下的准备作为第三组，那么第三组应该作为对照样本还是控制样本？？

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关键词：不胜感激 实证分析 样本 大虾

那么第三组应该作为控制样本

control group study

A control group study uses a control group to compare to an experimental group in a test of a causal hypothesis. The control and experimental groups must be identical in all relevant ways except for the introduction of a suspected causal agent into the experimental group. If the suspected causal agent is actually a causal factor of some event, then logic dictates that that event should manifest itself more significantly in the experimental than in the control group. For example, if 'C' causes 'E', when we introduce 'C' into the experimental group but not into the control group, we should find 'E' occurring in the experimental group at a significantly greater rate than in the control group. Significance is measured by relation to chance: if an event is not likely due to chance, then its occurrence is significant.

A double-blind test is a control group test where neither the evaluator nor the subject knows which items are controls. A randomized test is one that randomly assigns items to the control and the experimental groups.

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我也正愁着呢~~~ 怎么没人解答啊！~~