A production manager is comparing between three production methods.
The productivity (number of units produced per day) of the three production methods for the last 25 days
is presented in the table titled "Production Methods."
Production Methods
A	B	C
45	39	43
42	37	41
78	62	66
56	47	51
45	39	43
71	57	61
52	44	48
59	49	53
52	44	48
48	41	45
81	64	68
76	61	65
65	53	57
63	52	56
52	44	48
41	36	40
47	40	44
58	48	52
69	56	60
95	74	78
62	51	55
51	43	47
42	37	41
53	45	48
74	59	63