Public buffer stocks as agricultural output price stabilization policy in Ghana

Table 5 Corrected coefficients of variation (CCV) of raw data: between periods–within markets

	Market	Techiman market		Tamale market		Ho market
	Crop	Maize	Rice	Maize	Rice	Maize	Rice
Policy-off period (January 2006–December 2010)	Constant	14.322	23.430	15.522	20.003	22.246	29.44
	Coefficient	0.451	0.404	0.506	0.319	0.599	0. 576
	S.E	0.067	0. 060	0. 067	0.060	0. 088	0.051
	R ²	0.435	0.438	0.497	0.326	0.442	0.686
	CCV	0.319	0.223	0.287	0.269	0.290	0.145
Policy-on (January 2011–April 2015)	Constant	57.856	57.192	39.593	19.224	46.290	65.962
	Coefficient	− 0.066	0.740	0.921	0.255	1.734	1.908
	S.E	0.077	0.068	0.131	0.252	0. 260	0.206
	R ²	0.014	0.703	0.499	0.672	0.472	0.632
	CCV	0.148	0.095	0.219	0.311	0.302	0.189

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