Clarifications about MIDTERM

1. Question 3 refers to ALL countries -- you should look at the mean and median for all countries -- that will tell you something about what has been happening globally.
2. For question 5, pick ONE small binsize for all the data -- A binsize is TOO small if every bin contains only one or zero points. At the very least, many bins should contain TWO points for very small binsize. A binsize to TOO large if all the data is in one bin. At the very least there should be three or more nonempty bins. 
3. One important aspect of data analysis is to find out any peculariaties in the data. Look at the countries with maximum value and minimum values, and try to explain why some country is high and why some are low. Also look for any unusual events, like countries which had rapid change (relative to other countries. You will get points for pointing out UNUSUAL aspects of your data. EVEN more points if you can explain why this unusual aspect happened because of real world events.
4. Whereas we have been quite lax about deadlines in the past, the deadline on the MIDTERM will be strict. You must submit via email to uzma (uzma.economist@gmail.com) by MIDNIGHT on SUNDAY. Late exams will not be accepted. I have a record of who downloaded their data sets when, and I note that people are still downloading! Excuses will not be accepted. Even 24 hours is enough for finishing this exam -- my estimate is that it should take no more than 3 to 4 hours of work.