suppressor_in_multiple_regression
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| Both sides previous revisionPrevious revision | |||
| suppressor_in_multiple_regression [2025/11/09 12:47] – [도식화] hkimscil | suppressor_in_multiple_regression [2025/11/11 01:09] (current) – hkimscil | ||
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| Line 477: | Line 477: | ||
| summary(lm.y.x2)$r.squared = 0 | summary(lm.y.x2)$r.squared = 0 | ||
| lm.y.x1 <- lm(y ~ x1) | lm.y.x1 <- lm(y ~ x1) | ||
| - | summary(lm.y.x1)$r.squared = a | + | summary(lm.y.x1)$r.squared = a, p > .05 (may be not significant) |
| + | # 그러나 아래처럼 x2가 포함됨으로써 | ||
| + | # x1 내의 x2와 관련된 부분이 제거되어 | ||
| + | # 분석됨으로 significant하게 됨 | ||
| lm.y.x1x2 <- lm(y ~ x1 + x2) | lm.y.x1x2 <- lm(y ~ x1 + x2) | ||
| - | summary(lm.y.x1)$r.squared = a # but, with x1 without overlapped area with x2 as explaining part | + | summary(lm.y.x1)$r.squared = a |
| </ | </ | ||
suppressor_in_multiple_regression.1762692441.txt.gz · Last modified: by hkimscil