******************************************************************************
****			       	Problem Set 2 - Part (a)	 	        		  ****
******************************************************************************

/* Use /* ... */ to inactive the codes.


1. Use -global- to set up your own working dictionary
2. Use "ccode_s" in data folder:
	2.a. replace ccode from string to numeric 
	2.b. generate a new variable "abb" that contains only the first 
		 three letters of "country"

*/

* Show me your do files. (5 mins)



******************************************************************************
****			       	Problem Set 2 - Part (b)	 	        		  ****
******************************************************************************

/*
3. Use "reshape" in the data folder: make the data to a "long" shape
   [Hint: Always remember to check duplicates!]
4. System use "lifeexp": 
	a. make some regressions by your own choices
	b. output them to a table using either esttab or outreg
5. Organize all your codes in a single do file
	[Hint: do not forget the initial settings!]

*/


* Show me your final DO file. (15 mins)