Basic R Notation/Functions

Question 1

<-

Answer 1

assignment like = in python
x assigned 10 (x <- 10)

Question 1

~

Answer 1

operator to separate left and right sides of equation

Question 2

#

Answer 2

used to comment out things

Question 3

attach()

Answer 3

attaches data frame to a search path

makes it to where you don’t have to state path with a variable, can just say variable name

Question 4

boxplot()

Answer 4

creates box and whisker plots

Question 5

c()

Answer 5

combines values into a vector

c(“app”, “ban”, “ora”)

Question 6

cor()

Answer 6

computes correlation coefficient between 2 variables

cor(x, y)

Question 7

dir()

Answer 7

lists all of the files in a directory

Question 8

head()

Answer 8

shows first few rows of a data frame

Question 9

hist()

Answer 9

creates a histogram

hist(data, main =, xlab =)

Question 10

ls()

Answer 10

lists the names of objects in the environment

if you’ve created x, y, and z variables, it will list those out

Question 11

names()

Answer 11

outputs field headers in a table

Question 12

plot()

Answer 12

could create scatter, line, or histogram

Question 13

rm(list=ls())

Answer 13

deletes all objects in the current workspace like variables, functions, or objects

Question 14

summary()

Answer 14

basic descriptive stats