Table 4.

Estimated VE sizes (mean, estimated error, and upper and lower credible intervals) for each dialect used in this study.

Dialect	$\widehat{\beta }$	Est.Error	95% CrI
Central Scotland	0.99	0.03	[0.93, 1.06]
Edinburgh	1.01	0.04	[0.93, 1.09]
South West England	1.05	0.03	[0.99, 1.12]
Glasgow	1.06	0.02	[1.02, 1.11]
Northern Scotland & Islands	1.06	0.04	[0.99, 1.14]
East England	1.07	0.02	[1.02, 1.12]
Insular Scotland	1.08	0.06	[0.96, 1.21]
Lower North England	1.08	0.03	[1.02, 1.15]
New England	1.08	0.04	[1.00, 1.17]
East Central England	1.09	0.03	[1.03, 1.16]
Scotland	1.10	0.03	[1.04, 1.16]
West Central England	1.11	0.03	[1.04, 1.18]
NYC	1.12	0.04	[1.04, 1.20]
North East England	1.14	0.05	[1.04, 1.26]
Canada (urban)	1.15	0.02	[1.09, 1.21]
Western US	1.15	0.03	[1.09, 1.21]
Canada (rural)	1.17	0.03	[1.12, 1.24]
Ireland	1.17	0.04	[1.07, 1.28]
Philadelphia	1.17	0.02	[1.12, 1.22]
Southern US	1.17	0.03	[1.10, 1.24]
North Midland US	1.18	0.03	[1.11, 1.26]
Northern US	1.18	0.03	[1.11, 1.26]
Wales	1.18	0.03	[1.11, 1.25]
Raleigh US	1.19	0.03	[1.13, 1.26]
South Midland US	1.19	0.03	[1.13, 1.26]
Midwest US	1.20	0.03	[1.14, 1.26]
Northern Cities US	1.24	0.04	[1.15, 1.33]
Rochester NY (AAE)	1.35	0.03	[1.27, 1.44]
Princeville NC (AAE)	1.39	0.03	[1.31, 1.48]
Washington DC (AAE)	1.49	0.02	[1.42, 1.56]