12 Questions
What is the correct syntax to add lines while plotting data in R?
plot( x = arbuthnot$year, y = arbuthnot$girls, type = 'l')
How can all possible arguments for a function in R be found?
Using the question mark followed by the function name
What operation can be used as an argument in the plot function to represent the total number of baptisms each year?
Addition
Which arithmetic operation can be used to plot the total number of baptisms in 1629 in R?
In R, what is the purpose of using the 'type' argument when plotting data?
To control the type of plot (points, lines, both)
What functionality do the up and down arrow keys provide in RStudio?
Navigate through previous commands (command history)
What is the correct R command to extract the counts of boys baptized from the 'arbuthnot' dataset?
arbuthnot$boys
Which of the following commands would return the number of rows (observations) in the 'arbuthnot' dataset?
nrow(arbuthnot)
Assuming 'arbuthnot' is a data frame, which of the following expressions is NOT a valid way to access the column names?
arbuthnot[1,]
What does the output '82 3' from the 'dim(arbuthnot)' command represent?
82 rows and 3 columns
If the 'arbuthnot' dataset contains 82 observations, what is the index of the last entry in the 'arbuthnot$boys' vector?
82
Which of the following statements about R vectors is incorrect?
Vectors can contain elements of different data types.
Learn how to access Dr. Arbuthnot’s baptism records data in R by using the source() function. Explore the dataset that contains 83 observations and 3 variables, focusing on the ratio of girls and boys. Understand how to display all observations with column titles and check the dimensions of the table with dim().
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
