1. Go to the NYC data guide.
2. Select your neighborhood from the map.
3. Open any table using one of the links in the bubble (Social, Economic, Housing, or Demographic).
   
4. On the page with the table, click on “Back to Search.”
   
5. Any search you now perform on the Fact Finder site is going to restricted to the PUMA you selected.
   
6. Search for an earlier year (e.g., 2005). When selecting a data table from the search results, make sure the data are from an earlier year by checking the Dataset column.
   

There are a lot of different tables available, so you may have to look at several until you find the one with the data you need.

Herfindahl Index

$$ H=\sum_{i=1\ldots N} (S_i)^2 $$ (where $$S_i$$ is share of group $$i$$, and $$N$$ is number of groups)

Ethnolinguistic Fractionalization Index

$$ {ELF}=1-H $$

Based on a series of maps source from the Immigration Explorer, draft a blog post (using Word).

• A brief 500-word post for each group.

• Focus on a couple of interesting/remarkable points.

• You can choose a country, describe the behavior of its immigrants over time, or compare two countries. Supplement your findings from books/online material.

• However, the key insight has to be original.

• Send me a draft first.

• Deadline for sending the draft is February 10, 2012.

See this piece by my colleague Jesse Goldstein for some hints about how to write a good blog post. Also, read the Economix blog to get an impression of the kind of writing that is expected of you in this assignment.

And as always, go see your ITF during office hours for help with this and all other assignments.