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--- b:head_first_statistics:visualization [2026/09/01 23:05] – hkimscil
+++ b:head_first_statistics:visualization [2026/09/01 23:14] (current) – [Scatter plot] hkimscil
@@ Line 206: / Line 206: @@
- <code># Simple Scatterplot
+<code># Simple Scatterplot
-attach(mtcars)
+plot(mtcars$wt, mtcars$mpg, main="Scatterplot Example",
-plot(wt, mpg, main="Scatterplot Example",
    xlab="Car Weight ", ylab="Miles Per Gallon ",
    pch=19)</code>
+{{.:pasted:20260901-230946.png?600}}
-{{:b:head_first_statistics:pasted:20240904-083016.png}}
 explanatory (설명) variable at x axis
@@ Line 222: / Line 220: @@
 <code># Add fit lines
-abline(lm(mpg~wt), col="red") # regression line (y~x)
+abline(lm(mtcars$mpg ~ mtcars$wt), col="red", lwd=2) # regression line (y~x)
 </code>
-{{:b:head_first_statistics:pasted:20240904-083157.png}}
+{{.:pasted:20260901-231239.png?600}}
+{{{.:pasted:20260901-231245.png}}
 Outlier에 대한 주의
 [{{:pearson-6.png? |}}]