Table 4.

Population retrievals and correlation structure between interpolated population sources and administrative level 5 population (n = 6624 in all comparisons)

Inter.	Admin.	Total	Mean	Min.	Max.	Kurt.	Skew.	SE	Ad. r2	RMSE	RMSE%
AW	Kpop99	28 686 607	4 331	0	108 234	62	67	6
	Country	28 731 142	4 337	2	527 497	185	304	13	0.004	16 233	375
	Province	28 794 337	4 347	8	378 253	142	333	15	0.002	12 405	286
	District	28 829 542	4 352	1	378 263	112	508	17	0.035	9 572	221
	Division	28 830 286	4 352	0	158 316	76	154	9	0.148	6 301	145
	Location	28 765 445	4 343	0	108 024	63	56	6	0.738	2 698	62
	Sub-loc.	28 864 478	4 358	0	108 260	63	66	6	1.000	116	3
PI	Country	28 731 142	4 337	2	527 497	185	304	13	0.004	16 233	375
	Province	28 794 037	4 347	4	376 291	144	341	15	0.002	12 543	290
	District	28 827 976	4 352	1	376 560	112	507	17	0.037	9 516	220
	Division	28 847 329	4 355	0	150 804	75	145	9	0.156	6 220	144
	Location	28 859 276	4 357	0	108 318	63	57	6	0.750	2 635	61
	Sub-loc.	28 870 545	4 358	0	108 318	63	66	6	0.999	151	3
API	Country	27 577 041	4 163	0	174 879	100	63	6	0.013	9 074	210
	Province	27 640 763	4 173	0	249 225	111	171	10	0.035	9 508	220
	District	27 892 903	4 211	0	249 225	112	170	10	0.088	8 994	208
	Division	28 436 608	4 293	0	130 757	86	71	6	0.177	6 701	155
	Location	28 515 116	4 305	0	108 063	67	51	5	0.671	3 189	74
	Sub-loc.	28 446 519	4 294	0	107 977	62	66	6	0.995	378	9

Inter., interpolation method; Admin., administrative level; AW, areal weighting; PI, pycnophylactic interpolation; API, accessibility potential interpolation; Total, total population; Min., minimum; Max., maximum; Kurt., kurtosis; Skew., skewness; SE, standard error; Ad. r², adjusted r squared (note all correlations highly significant P ⪢ 0.0001); RMSE, root mean square error. RMSE %, (RMSE/Mean) × 100.