You should edit this .Rmd using RStudio, then click Knit in the menu bar of the Source window (above the text of this .Rmd). Remember, you must submit both your .Rmd and the compiled .html in order to receive full credit!
INSERT NAMES OF ANY STUDENTS WORKED WITH
Work with one or two other students,
1. In words, what does the following line of code do?
sample(1:6, 1)## [1] 22. Run the line of code in RStudio. What do you get? What did your groupmates get? What happens to the result each time you knit the document?
3. Below, we introduce the set.seed function. What do the two lines of code below do? What does the 456 mean? What happens to the result each time you knit the document?
set.seed(456)
sample(1:6, 1)## [1] 54. We can also use in-line R code in R Markdown to ensure that we donโt have to edit our text each time we knit our file. Edit the text below using in-line code to print out your value of x.
x <- sample(1:6, 1)The value of x that I obtained is YOUR ANSWER HERE.
5. Choose a seed and replace the seed used in the code below. Using the code below, we can simulate a vector of Uniform(0,1) random variables and two additional random variables y and z. What is the difference between y and z?
set.seed(456)
x <- runif(2000)
y <- mean(x < .5)
z <- mean(x)6. Construct a 3 by 3 matrix with 1s on the main diagonal and 3s in all other entries. Print the resulting matrix.
# YOUR CODE HERE7. First, run install.packages("moderndive") and then the following code. This loads the house_prices dataset, which contains house sale data for King Country. What time period are these house prices from?
library(moderndive)
data("house_prices")8. The house_prices$bedrooms vector contains information on the number of bedrooms in each house. What is the median value? What is the most common value?
# Your code here9. (Optional) The house_prices$bedrooms vector contains information on the number of bedrooms in each house. What is the maximum value? Is this realistic? Can you figure out what happened here?