Exercise III

Statistical inference

1. Load the BKF94.daf file and initialise its sampling design in sheet file1.

2. Estimate the poverty incidence and its confidence interval when:

   • NVIE is the variable of interest

   • The poverty line is 41099 F CFA

   • The asymptotic approach is used.

3. Repeat the same procedure with the bootstrap approach

4. Draw the curves of the estimated incidence indices of poverty.

5. Load the file BKF98.daf in the sheet file2 and initialise its sampling design. Consider that the two distributions are independent.

6. Compute an estimate of the poverty incidence as well as of its confidence interval when:

   • NVIE is the variable of interest

   • The poverty line is 72690 F CFA

   • The asymptotic approach is used.

7. Estimate the difference and its standard error and use the Distribution|Confidence interval to test if the difference is null.

Requiered DATA

#	Data	Description
01	BKF94
02	BKF98

REMARK: To download any of these daf files, do the following step:

• point with the mouse to the desired file
• click on the left button of the mouse
• select the item Save target as
• indicate  the desired folder to save the file.

Answers