Question $3$

Part A$)$ Run the next cell to read in the data set called "data$1"$ and to check its dimension.

mydata $=$ read.table$("$data$1")$

dim$($mydata$)$

$100001$

"mydata" is a "data frame" which is essentially a table. Because the dimension is $10,000$ by $1,$ it is a single column of data. In this case it is going to be easier to remove the more complicated table struction and turn it into a vector. Do you recall how we use the letter c to define a vector? Run the next cell. Notice the check before and after the transformation as to whether or not we have a vector.

is$.$vector$($mydata$)$

mydata $=$ c$($unlist$($mydata$))$

is$.$vector$($mydata$)$

FALSE

TRUE

In the next cell, make a histogram of the data. Be sure to use "density" on the y$-$axis. Use the given "breaks" vector. $($i$.$e$.$ use breaks$=$br in your histogram$)$ Usually you will have to determine the breaks yourself by looking at the minimum and maximum of the data and trying different bin widths. We are giving you a specific vector of breaks here to help with the autograder. We are also giving the histogram a name for the autograder$--$ usually you would not have anything before "hist" on that line.