R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot. # Vektor

Cara membuat data dalam bentuk Vektor

#Create sample data 
X <- c(15, 17, 19, 20, 27, 25, 50)
Y <- c(150, 200, 235, 220, 267, 300, 310, 400)
#print sample
X
## [1] 15 17 19 20 27 25 50
Y
## [1] 150 200 235 220 267 300 310 400

SimleLinear Regression

Y = a + bx

Y = 170 + 17x

Scatter Plot

plot(Y - X, ylab="Y", pch=20)
## Warning in Y - X: longer object length is not a multiple of shorter object
## length
#Systematic Relationship to the plot
abline(a =310, b=-40)