Answers
  1. Load the BKF94.daf file and initialise its sampling design in sheet file1. Similarly, load the file BKF98.daf in the sheet file2 and initialise its sampling design. Consider that the two distributions are independent.

 
Initialising  the sampling weight: EDIT|Set Sample Design

 

  • After choosing the appropriate variable(s), click on  the button OK.

Use the DAD Application: DECOMPOSITION|FGT: GROWTH & DISTRIBUTION

  • After choosing the appropriate files, click on the button OK.
 

  1. Decompose the variation in the incidence and depth  of poverty when:

    • NVIE is the variable of interest for distribution 1 and NVIEI for distribution 2

    • Use the Datt Ravallion approach

    • t1 is the period of reference.

    • The poverty line is 41099 F CFA

Performing the decomposition

  • After choosing the appropriate variables and parameters, click on the  Compute button.

RESULTS

Growth & Redistribution (Poverty Decomposition)

Session Date Mon Jan 03 11:41:19 EST 2005  
Execution Time 1.094 sec  
FileName BKF94.daf BKF98.daf
OBS 8625 8478
Sampling Weight WEIGHT WEIGHT
Variable of interest NVIE NVIEI
Size variable SIZE SIZE
Group variable No Selection No Selection
Index of Groups 1 1
alpha 0 0
Approach Datt & Ravallion (1992) Periode of reference = 1
Estimate 0.44456312 0.20688510
Difference Index1-Index2 -0.23767802
Poverty Line 41099.00000000 41099.00000000

Contribution of:

Growth

Redistribution

Residue

 
-0.19937174
-0.02297512
-0.01533116

 
 

  1. Now, use t2 as the reference period and perform the same decomposition.

 

RESULTS

Growth & Redistribution (Poverty Decomposition)

Session Date Mon Jan 03 11:56:03 EST 2005  
Execution Time 0.031 sec  
FileName BKF94.daf BKF98.daf
OBS 8625 8478
Sampling Weight WEIGHT WEIGHT
Variable of interest NVIE NVIEI
Size variable SIZE SIZE
Group variable No Selection No Selection
Index of Groups 1 1
alpha 0 0
Approach Datt & Ravallion (1992) Periode of reference = 2
Estimate 0.44456312 0.20688510
Difference Index1-Index2 -0.23767802
Poverty Line 41099.00000000 41099.00000000

Contribution of:

Growth

Redistribution

Residue

 
-0.21470290
-0.03830628
0.01533116

 
 

  1. Use the Shapley approach to perform the decomposition again.

 

RESULTS

Growth & Redistribution (Poverty Decomposition)

Session Date Mon Jan 03 11:59:09 EST 2005  
Execution Time 0.046 sec  
FileName BKF94.daf BKF98.daf
OBS 8625 8478
Sampling Weight WEIGHT WEIGHT
Variable of interest NVIE NVIEI
Size variable SIZE SIZE
Group variable No Selection No Selection
Index of Groups 1 1
alpha 0 0
Approach Shalpey
Estimate 0.44456312 0.20688510
Difference Index1-Index2 -0.23767802
Poverty Line 41099.00000000 41099.00000000

Contribution of:

Growth

Redistribution

Residue

 
-0.20703732
-0.03064070
0.00000000