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--- c:ms:2023:schedule:w10.lecture.note [2023/05/07 16:55] – [R. Graph output] hkimscil
+++ c:ms:2023:schedule:w10.lecture.note [2024/05/12 23:54] (current) – [R code] hkimscil
@@ Line 88: / Line 88: @@
 b <- lm.mod2$coefficients[2]
 a <- lm.mod2$coefficients[1]
+b
+a
+# y추정치 y.hat = a + bx
 ggplot(data=df, aes(x,y)) +
@@ Line 105: / Line 110: @@
 y.hat <- lm.mod2$fitted.values
+# 참고로
+# y.hat2 <- a + b*x
+head(y.hat)
+head(y.hat2)
 y.hat - mean(df$y)
 explained <- y.hat - mean(df$y)
@@ Line 683: / Line 693: @@
 {{:c:ms:2023:schedule:pasted:20230508-015354.png}}
 {{:c:ms:2023:schedule:pasted:20230508-015408.png}}
-{{:c:ms:2023:schedule:pasted:20230508-015429.png}}
 {{:c:ms:2023:schedule:pasted:20230508-015444.png}}
 {{:c:ms:2023:schedule:pasted:20230508-015501.png}}
+##############################
+{{:c:ms:2023:schedule:pasted:20230508-015429.png}}