CHAPTER ONE DATA MANAGEMENT IN R

In this chapter, we will cover a number of functions , commands and packages used for data management in R

Data Types In R

There are six different data types in R including

  • vectors
  • matrices
  • Arrays
  • Data Frames
  • lists
  • Factors

Vectors

Vectors are the fundamental components for all data types in R. Based on the scale in measurement, they can be categorized into six different components including:

1.character 2.Orders 3.factors 4.Integers 5.numeric 6.logical

Example 1

x<-c(12,11.5,12.5,13.5,21,23,24,21,25,26)
plot(x)

hist(x)

boxplot(x)

Exmaple 2

y<-c(T,T,T,T,F,F,F,F,T,F)
table(y)
## y
## FALSE  TRUE 
##     5     5
barplot(y)