今天看Econometric Analysis，以前觉得自己懂一点，现在看了发现自己根本不懂。
贴上来吧：
partial correlation
| - Defined: | Partial correlation is the relationship between two variables while controlling for a third variable. |
| - Variables: | IV is continuous, DV is continuous, and third variable is continuous |
| - Relationship: | Relationship amongst variables |
| - Example | Relationship between height and weight, while controlling for age |
| - Assumptions: | Normality. Linearity.
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发现中文的还比较容易懂，英文的...
继续吧。 |
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