Question

1. In a graph, compare the mean estimates for population size for each of the three sampling efforts.

   Group	Effort	m(marked initially)	r(marked recaptures)	t(total in second sample)	N(total population size)
   1	1	54	2	49	1323
   1	2	113	12	110	1035.83
   1	3	154	41	179	672.34
   2	1	64	4	69	1104
   2	2	77	11	100	700
   2	3	131	20	141	923.55
   3	1	60	4	65	975
   3	2	118	15	115	904.67
   3	3	198	80	211	522.23
   4	1	56	2	41	1148
   4	2	97	19	110	561.58
   4	3	136	20	131	890.80
   5	1	39	6	49	318.5
   5	2	101	19	128	680.42
   5	3	137	33	188	780.48
   6	1	52	2	58	1508
   6	2	125	19	128	842.11
   6	3	180	40	186	837.00
   7	1	31	2	43	666.5
   7	2	69	4	90	1552.5
   7	3	138	29	149	709.0344828

Answer 1

The graph is:

The mean estimate for population size for sampling effort 1 is 1000.

The mean estimate for population size for sampling effort 2 is 850.

The mean estimate for population size for sampling effort 3 is 800.

Therefore, the mean estimate for sampling effort 1 is the highest among all, followed by sampling effort 2, and the lowest mean estimate is for sampling effort 3.