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--- r:getting_started [2017/09/06 10:09] – [Starting R] hkimscil
+++ r:getting_started [2021/03/02 09:48] – [A trial] hkimscil
@@ Line 45: / Line 45: @@
 boxplot(trees)
 pair(trees)
+</code>
+<code>cars
+plot(dist~speed, data=cars)
+m.cars <- lm(dist ~ speed, data=cars)
+m.cars
+summary(m.cars)
 </code>
+<code>chickwts
+summary(chickwts)
+boxplot(weight~feed, data=chickwts)
+anova(lm(weight~feed, data=chickwts) ## or . . .
+m.chck <- aov(weight~feed, data = chickwts)
+m.chck
+summary(m.chck)
+</code>
+----
+Not required yet.
+[[:t-test]]
+[[:ANOVA]]
+[[:Factorial ANOVA]]
+[[:correlation]]
+[[:regression]]
+[[:Multiple regression]]
+----
 ====== Entering commands ======
 <code>
@@ Line 133: / Line 156: @@
 [1] 8.75 5.50
 </code>
+see [[https://3months.tistory.com/97|this document]] for **trim** option
 <code> mean> mean(USArrests, trim = 0.2)
@@ Line 143: / Line 168: @@
 .42 167.60 66.20 20.16
 </code>
+see [[https://rfriend.tistory.com/40|this document]] for **colMeans** function.
 ====== Searching via Keywords ======