Summary
This case study is taken from a pilot household survey
investigating the cattle breeding practices of the Orma people in eastern Kenya.
The case study combines questionnaire and quantitative measurement approaches to
assess levels of milk production by village Orma Boran cattle and the extent to
which these are surplus to the consumption needs of the household. It
demonstrates the application of methods of regression analysis to compare
associations in milk offtake with age of calf of cows kept in two separate
village locations.
Having explored graphically the nature of the relationships
the case study shows how to fit separate regression lines for each location,
firstly in parallel and secondly with different slopes. Reporting methods for
the presentation of results of regression analysis are also illustrated. The
results are then used together with data collected on average daily household
consumption to assess the levels of surplus milk offtake available for sale by a
household. |