Household Budget Survey 2007

The sampling of households was created by multi-probabilistic (random) sample. This principle guarantees the independence of the selection of the sample results and avoid deliberate its mistakes. Formation of a sample of households was carried out by the territorial principle-based register (list) of housing facilities, set up following the National Census of the Republic of Kazakhstan. Network representative as to the national and at regional level.

General population was divided into six strata: large, medium and small cities of Almaty, Astana, and the countryside.

• The first stratum includes households of major cities with the number of households over 30 thousand units.
• The second stratum comprises households with medium-sized cities of households over 10 thousand units, but less than 30 thousand.
• The third stratum includes households in small towns and townships with the number of households no more than 10 thousand units.
• The fourth stratum comprises households in Almaty.
• The fifth stratum includes households of the city of Astana.
• The sixth stratum includes households of rural settlements.

The sample size was formed on the basis of the objectives of the survey, the degree of heterogeneity of the population studied in terms of properties and financing.
The sample size for each stratum was determined using the following formula:

                                             Ni
                                   ni =-------*n ,
                                             N

where:

n = 12000
ni - rounded to a multiple of 30,
i = 1, 2, 3, 4, 5, 6.

All cities included in the first stratum, Almaty and Astana were selected with a probability equal to unity. Therefore, in the first stratum sample size of households was determined for each of the following formula:

                                              N1j
                                  n1j =-------* n1,
                                             N1

where:

N1 - all households first stratum,
N1j - the number of households of the j-th first stratum,
n1 - a sample size first stratum,
n1j - a sample size of the j-th first stratum (values rounded to a multiple of 30)

The sample medium, small cities and towns by the method of simple random sampling (PSV) using the software package SPSS. All medium-sized cities that are included in the second stratum, located from west to east in the following order:

1. West Kazakhstan region;
2. Atyrau region;
3. Mangystau;
4. Aktobe region;
5. Kyzylorda region;
6. Kostanay;
7. South Kazakhstan region;
8. Aqmola;
9. Karaganda region;
10. North Kazakhstan region;
11. Zhambyl;
12. Pavlodar region;
13. Almaty region;
14. East Kazakhstan region