Reading and importing data
What function is used to read CSV files into R?
read.csv()
What data type is "Hello" in R
Character
What abbreviation is used for standard deviation?
sd
What pane in Rstudio shows your variables and data?
Environment pane
What kind of error fo you get if you forget a closing parentheses?
Syntax error
What argument do u add to read.csv() to prevent strings from turning into factors?
stringsAsFactors = FALSE
What is a vector in R?
What abbreviation is used to find histograms?
hist
What pane shows plots or help files?
viewer/Plots/Help pane
What does R usually say when a variable hasn't been defined?
"Object not found"
What function shows the first few rows of a dataset?
What structure stores rows and columns, like a table?
Data frame
What does rep () do in R?
Repeats values a specified number of times
How do u clear the console in RStudio?
ctrl + or command + L
What might cause an error in mean ("hello")?
What function do you use to set your working directory?
setwd()
What function shows the structure of a dataset?
str()
How do we start a plot code?
plot(
What button do u click to run a selected line of code?
Run()
If R says "unexpected symbol," what is probably wrong?
There is a typo or a missing operator
What does read.table() need that read.csv () automatically includes?
A sep argument (usually sep="," for CSV)
What R function tells you the type of an object?
class () or typeof ()
What function returns the names of columns in a data frame?
colnames()
Where can u install new R packages in RStudio?
How do you check what went wrong in a function?
Use traceback () or read the error message carefully