Statistical modelling/Milk consumption & marketing

A summary of the results of the questionnaire survey on how milk offtakes were utilised is given in the table. The table collects together results of calculations done within the Excel file itself. These can be seen by opening the Bilisa and Assa spreadsheets in CS1Data2 and comparing the coloured sections.

			Milk offtake (litres per day)
Location	Family size	No. of lactating cows	Total milk offtake	Consumed at home	Given to friend	Sold	Unaccounted for
Bilisa	16.2 ± 1.0	11.5 ± 1.8	21.2 ± 0.6	4.8 ± 0.9	1.2 ± 0.2	2.4 ± 0.3	12.8
	(38)	(38)	(111)	(24)	(27)	(36)
							&
Assa	15.4 ± 1.9	15.2 ± 2.5	15.6 ± 1.2	12.8 ± 2.2	1.1 ± 0.3	0.2 ± 0.2	1.5
	(9)	(9)	(53)	(8)	(5)	(9)

The total milk offtake values per household were calculated as:

Average no. of lactating cows (see above) x (offtake mean per cow calculated earlier from the milk production survey − see mean values below)
= 11.5 x 1.843 = 21.2 litres for Billisa; = 15.4 x 1.025 = 15.6 litres for Assa.