//  Task 1 routine setup
 
    capture log close 
    set more off 
    estimates clear 
   
    log using cda05b-ex5.log, replace text
    version 9.2
    set scheme s2mono 
    
//  pgm:        cda05b-ex5.do
//  task:       5 - Testing and Assessing Fit - Excercise
//  project:    CDA Lab Guide
//  author:     your name
//  date:       today's date

    use sci-review, clear

//  Task 2: keep stjob, female, enrol, and phd. Explore and drop missing.


//  Step 2.1 keep the four variables and explore.


//  Step 2.2 drop missing cases


//  Step 2.3 verify the last step


//  Task 3: Test that being female does not affect stjob in full model.


//  Task 3a: estimate full model and use z-statistics


/*  Type your answer here

*/

//  Task 3b: use test to test the effect of being female.

/*  Type your answer here

*/

//  Task 3c: test the same hypothesis using an LR test


//  Task 4: Test that the effects of female and enroll are simultaneously
//  equal to zero using a Wald test and an LR test.

//  Task 4a: the wald test


//  Task 4b: the LR test


//  Task 4c: compare the estiamtes


//  Task 5: Test that the effect of enroll equals that of phd.

//  Step 5.1: estimate full model and use test.


/*  Type your answer here

*/

//  Task 6: Use fitstat to compare the full model with the
//  model with female and the model without female or enrol.

//  Step 6.1 run a logit regression of stjob on female, enrol, and phd
//  and use fitstat, saving the results.


//  Step 6.2 run a second logit regression of stjob on enrol and phd;
//  use fitstat with saving() and using() to compare models.


//  Step 6.3 run a third logit regression of stjob on female and compare.


//  Task 7: Use methods of outlier detection to examine weaknesses in
//  your model.

log close
exit