Agriculture Reference
In-Depth Information
Table 4.1 Distribution of sampled households by suburb
name and type
Suburb name
Suburb type
Sample size
(number practising UA)
Greendale
Low density
19 (19)
Hatfield
Low density
22 (20)
Mabelreign
Low density
16 (16)
Mt Pleasant
Low density
19 (18)
Waterfalls
Low density
20 (20)
Tynwald
Medium density
20 (20)
Budiriro
High density
25 (20)
Dzivarasekwa
High density
26 (22)
Glen Norah
High density
25 (20)
Glen View
High density
26 (21)
Hatcliffe
High density
22 (22)
Kambuzuma
High density
25 (23)
Kuwadzana
High density
23 (16)
Mabvuku
High density
26 (25)
Tafara
High density
24 (23)
Warren Park
High density
30 (26)
where n is the minimum sample size required; z is 1.96, the value of z at the 95
per cent confidence interval; c is the variation within the population, which
has been assumed to be 60 per cent; and x is the expected level of accuracy,
which has been estimated at 6.1 per cent.
Therefore:
n
¼
ð
1
:
90
Þ
2
ð
60
Þ
2
ð
6
:
1
Þ
2
¼
372
ð
4
:
2
Þ
Conducting the study
The questionnaire was pre-tested in three different areas of the city, modified
and delivered by eight surveyors selected and trained by the researcher. The
training sessions served to explain why the survey was being conducted, its
relevance to urban and national development and the rationale for sampling.
Surveyor training and pre-testing of questionnaires took place during a two-
week period of November 2005. After training, enumerators received notes
explaining the meaning, relevant concepts and definitions for each question, as
well as the techniques for data collection. Enumerators helped translate the
questionnaire into Shona, the language spoken in the study area. The survey
was carried out over a period of two weeks in December 2006. Questionnaires
were field-checked by the academic supervisor of this work and subsequently
by the researcher.
