//  Task 1 routine setup
 
    capture log close 
    set more off 
    estimates clear 
   
    log using cda08b-ex8.log, replace text
    version 9.2
    set scheme s2mono 
    
//  pgm:        cda08b-ex8.do
//  task:       8 - Count Outcomes - Excercise
//  project:    CDA Lab Guide
//  author:     your name
//  date:       today's date

    use science3, clear

//  Task 2: examine and clean the variables to be analyzed.


//  Task 3: Use poisson and nbreg to regress pub3 on faculty, mcit3, and pub1.
//  Compute the standardized and unstandardized coefficients.

//  Task 3a: estimate a PRM and list the coefficients.


//  Task 3b: estimate a NBRM and list the coefficients.


//  Task 3c: for the NBRM, interpret the standardized factor change coefficient
//  for pub1 and the unstandardized coefficients for pub1 and faculty.

/*  Type your answer here

*/

//  Task 3d: test the NBRM against the alternative of the PRM.

/*  Type your answer here

*/

//  Task 4: Use prcounts to create predicted probabilities and plot them.

//  Task 4a: estimate the PRM of pub3 on fauclty, mcit3, and pub1.


//  Task 4b: computed predictions with prcounts.


//  Task 4c: estimate the NBRM.


//  Task 4d: computed predictions with prcounts.


//  Task 4e: plot predicted probabilities


//  Task 4f: decide which model you would prefer.

/*  Type your answer here

*/

//  Task 5: Estimate the same model using zip and zinb.

//  Step 5.1: zip model


//  Step 5.2: zip model


//  Step 5.3: which model do you prefer?

/*  Type your answer here

*/

log close
exit