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.

library(palmerpenguins)
## 
## Attaching package: 'palmerpenguins'
## The following objects are masked from 'package:datasets':
## 
##     penguins, penguins_raw
data("penguins")
penguin_data<-penguins[,c("species","island")]
penguin_data<-na.omit(penguin_data)
species_island_table<- table (penguin_data$species, penguin_data$island)
species_island_table
##            
##             Biscoe Dream Torgersen
##   Adelie        44    56        52
##   Chinstrap      0    68         0
##   Gentoo       124     0         0
chisq_test_result<-chisq.test(species_island_table)
chisq_test_result #귀무가설 기각
## 
##  Pearson's Chi-squared test
## 
## data:  species_island_table
## X-squared = 299.55, df = 4, p-value < 2.2e-16