Assignment 7

Use the IPEDS data sets, hd2007.csvand ic2007mission.csv, to answer the questions below. You may need to look up and download the data dictionaries for each file. Click the “continue” button on this page to see the data and accompanying dictionary files. You can also use the supplementary lesson on getting higher education data for help.

You do not need to save the final output as a data file: just having the final result print to the console is fine. For each question, I would like you to try to pipe all the commands together. Throughout, you should account for missing values to the best of your ability by dropping them.

For each question, show your data work and then answer the question in a short (1-2 sentence(s)) comment.

Questions

NB To answer the questions, you will need to join the two IPEDS data sets using the common unitid key. Note that column names in hd2007.csv are uppercase (UNITID) while those in ic2007mission.csv are lowercase (unitid). There are a few ways to join when the keys don’t exactly match. One is to set all column names to the same case. If you want to use left_join() starting with hd2007.csv, you can first use the the dplyr verb rename_all(tolower) in your chain to lower all column names. See the help file for left_join() for other ways to join by different variable names.

1. How many chief administrator names start with “Dr.”?
   NB Many chief administrators are listed on more than one line due to branch campuses. Make sure to take this into account by keeping only distinct names.
2. BONUS How many chief administrator names end with the title “PH.D.” or some variant?
3. Among those schools that give their mission statement:
   1. How many repeat their institutional name in their mission statement?
   2. How many use the word civic?
   3. Which top 3 states have the most schools with mission statements that use the word future?
   4. Which type of schools (public, private-non-profit, private-for-profit) are most likely to use the word skill in their mission statement?
4. Among the schools that closed in 2007 or 2008 and give a date with at least a month and year:
   1. Which has been closed for the longest time? How many months has it been from its close date to the beginning of this current month (1 February 2020)?
   2. How many days were there between the first school to close and the last?

Submission details

• Save your script (<lastname>_assignment_7.R) in your scripts directory.
• Push changes to your repo (the new script and new folder) to GitHub prior to the next class session.