What is the age of primary decision maker?

Data by primary land use

Primary land use	N	mean	sd	min	median	max
sheep and/or beef	694	56.65	10.25	24	58	86
dairy	327	52.07	9.45	28	52	79
deer & other stock	54	56.81	8.78	31	57.5	76
hort & vit	167	60.47	8.84	34	61	87
arable	47	54.62	10.56	34	56	80
forestry	124	60.42	8.7	31	60	84
dairy support	70	56.96	10.75	36	56.5	83
other	81	58.83	8.94	40	57	77
Total	1,564	56.47	10.1	24	57	87

Region	N	mean	sd	min	median	max
Auckland	48	58.19	10.11	33	56	79
Bay of Plenty	84	58.44	9.134	36	58	82
Canterbury	278	55.47	9.628	25	56	80
Gisborne	38	59.39	8.894	36	61.5	77
Hawke's Bay	131	56.35	10.32	26	57	80
Marlborough	89	58.38	9.147	37	59	80
Manuwatu-Whanganui	104	56.15	11.17	30	57	86
Northland	83	58.96	8.741	39	59	83
Otago	200	55.17	10.66	29	56	87
Southland	134	53.21	10.94	28	52	77
Tasman & Nelson	105	60.41	9.277	29	61	79
Taranaki	67	55.6	8.993	39	56	75
Waikato	116	54.95	10.93	24	55	79
Wellington	56	60.16	8.031	38	59.5	84
West Coast	31	53.35	7.923	36	52	68
Total	1,564	56.47	10.1	24	57	87