Study questions
-
You reach a dip-tank area with your assistant and are ready to select 10 homesteads at random. Describe how you might select the sample.
- Stratification of dip-tank areas can be based on such factors as livestock density, ecological zone and proximity to a commercial farm. It is required to select 6 dip-tank areas from the following dip-tank areas for Lobamba Sub-region. Decide how you would stratify the dip-tank areas and which factors you would use to define the strata. Select dip-tank areas from within these strata at random to make up the six required.
Dip-tank area
|
Livestock density
|
Ecological zone
|
Close to commercial farm
|
Buhlungu
|
Medium
|
A
|
Yes
|
Ezulwini
|
Low
|
A
|
No
|
Luphahlane
|
Low
|
A
|
No
|
Mhlambanyatsi
|
Medium
|
B
|
No
|
Bhidlilili
|
High
|
C
|
No
|
Mdonjane
|
High
|
B
|
Yes
|
Sigcawini
|
Medium
|
B
|
Yes
|
Vezi
|
High
|
A
|
No
|
Makhebelele
|
High
|
A
|
No
|
Luyengweni
|
Medium
|
A
|
No
|
Mambiteni
|
Low
|
A
|
No
|
Magwama
|
Medium
|
B
|
No
|
Majuba
|
High
|
B
|
Yes
|
|
|
