Complete the following steps and then answer the exercise questions below.

Step $1.$ Copy the Chapter $12$ exercise text data into a folder that you can access from RStudio.

Step $2.$ In RStudio, load the library needed to conduct text mining analysis.

Step $3.$ Set the file path in RStudio to the directory where you stored the text document for this exercise. Import the text document into an appropriately named data object in RStudio.

Step $4.$ Using tm$\_$map$()$ functions, remove punctuation and English stopwords and make all tokens lowercase.

Step $5.$ Convert the text data into a document term matrix.

Step $6.$ Sum up the total word frequency for the terms in the matrix.

Step $7.$ Output the word list generated in step $6$ as a CSV text file. Open the file as a spreadsheet and answer the following questions. Ignore any tokens that are less than three letters long.

Which word appears most prevalently in this text?

country

applause

year

policy

Bookmark question for later

Among the top $20$ tokens, which two would be most likely to be combined into a single token if word stemming were applied?

make$/$time

America$/$Americans

jobs$/$work

people$/$jobs

Bookmark question for later

In speeches during his presidency, George W$.$ Bush mentioned the nation of Afghanistan $57$ times. How often did Barack Obama mention Afghanistan?

Less than George W$.$ Bush did

Obama does not mention Afghanistan in this text.

The same amount as George W$.$ Bush did

More than George W$.$ Bush did

Bookmark question for later

How many times in the text is the word $$education$$ mentioned?

$30$

$84$

$185$

$52$

Bookmark question for later

Barack Obama was well known for his focus on environmental concerns. How many times did he mention $$earth$,$climate$,$ or any version of the word stem $$environ$?$

$118$

$40$

$52$

$423$