Table 2.

Estimated model parameters for a 3-epoch model of African-American demographic history.

Epoch	Population	Mean	Standard deviation	Minimum	First quartile	Median	Third quartile	Maximum
Epoch 1	European ($s_{2,1})$	0.089	0.061	0	0.04	0.08	0.13	0.25
Epoch 2	African ($s_{1,7})$	0.061	0.040	0	0.03	0.06	0.09	0.15
	African-American ($h_7)$	0.902	0.039	0.85	0.87	0.90	0.93	1.00
	European ($s_{2,7})$	0.037	0.030	0	0.01	0.03	0.05	0.15
Epoch 3	African ($s_{1,10})$	0.085	0.041	0	0.05	0.09	0.12	0.15
	African-American ($h_{10})$	0.899	0.039	0.85	0.87	0.89	0.93	0.99
	European ($s_{2,10})$	0.016	0.010	0	0.01	0.02	0.02	0.03

The table summarizes the parameter sets that produce permissible values for the expectation and variance of $H_{1,14}$, the African ancestry fraction in generation 14. Note that in epoch 1, the African and African-American parameter values are generation-specific, set according to the values in Table 1 rather than estimated. The table is based on 45,189 accepted parameter sets, ∼9% of the 480,896 sets examined.