Notes:

Bolded: ACS 90% MOE crosses 0 (no data still with MOE)
Where this ACS table includes all "Housing Units", MRIS only includes data on residential homes that sold on the market (e.g. no apartments)
5 Year estimates are not included as the 2010 - 2014 ACS tables are not available.

County

5 Year

Geography:	Arlington County, Virginia
Dataset: 2009-2013 5-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	106,740	191	116	2,720	104,020	NO
0 bedrooms	4,584	526	320	49	4,535	NO
1 bedrooms	36,063	964	586	539	35,524	NO
2 bedrooms	31,633	1,062	646	857	30,776	NO
3 bedrooms	19,358	777	472	674	18,684	NO
4 bedrooms	10,186	539	328	377	9,809	NO
5 or more bedrooms	4,916	453	275	225	4,691	NO

Geography:	Arlington County, Virginia
Dataset: 2009 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	103,813	872	530	2,676	101,137	NO
0 bedrooms	4,163	1,167	709	55	4,108	NO
1 bedrooms	33,195	2,573	1,564	527	32,668	NO
2 bedrooms	29,944	2,704	1,644	907	29,037	NO
3 bedrooms	20,512	1,877	1,141	640	19,872	NO
4 bedrooms	11,217	1,532	931	349	10,868	NO
5 or more bedrooms	4,782	1,195	726	198	4,584	NO

Geography:	Arlington County, Virginia
Dataset: 2010 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	105,490	619	376	2,633	102,857	NO
0 bedrooms	5,525	1,285	781	61	5,464	NO
1 bedrooms	34,387	2,341	1,423	512	33,875	NO
2 bedrooms	31,471	2,815	1,711	816	30,655	NO
3 bedrooms	19,474	2,014	1,224	666	18,808	NO
4 bedrooms	10,493	1,473	895	372	10,121	NO
5 or more bedrooms	4,140	869	528	206	3,934	NO

Geography:	Arlington County, Virginia
Dataset: 2011 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	106,720	417	253	2,384	104,336	NO
0 bedrooms	3,390	1,521	925	40	3,350	NO
1 bedrooms	38,636	3,683	2,239	449	38,187	NO
2 bedrooms	32,616	3,120	1,897	782	31,834	NO
3 bedrooms	18,329	2,211	1,344	623	17,706	NO
4 bedrooms	8,640	1,232	749	305	8,335	NO
5 or more bedrooms	5,109	1,072	652	185	4,924	NO

Geography:	Arlington County, Virginia
Dataset: 2012 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	107,734	537	326	2,815	104,919	NO
0 bedrooms	4,202	1,278	777	39	4,163	NO
1 bedrooms	38,677	2,471	1,502	555	38,122	NO
2 bedrooms	32,353	2,325	1,413	864	31,489	NO
3 bedrooms	18,751	1,502	913	718	18,033	NO
4 bedrooms	9,944	1,230	748	419	9,525	NO
5 or more bedrooms	3,807	724	440	221	3,586	NO

Geography:	Arlington County, Virginia
Dataset: 2013 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark			Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	SE	Estimate	Difference	Within 90%MOE?
Total	109,689	504	306	2,986	106,703	NO
0 bedrooms	4,729	1,402	852	45	4,684	NO
1 bedrooms	35,719	2,279	1,385	622	35,097	NO
2 bedrooms	34,198	2,771	1,684	962	33,236	NO
3 bedrooms	19,014	2,021	1,229	690	18,324	NO
4 bedrooms	10,359	1,308	795	393	9,966	NO
5 or more bedrooms	5,670	914	556	274	5,396	NO

Geography:	Arlington County, Virginia
Dataset: 2009-2013 5-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	106,740	191	2,720	104,020	NO
0 bedrooms	4.29%	0.49%	1.82%	2.48%	NO
1 bedrooms	33.79%	0.91%	19.82%	13.97%	NO
2 bedrooms	29.64%	1.00%	31.49%	-1.86%	NO
3 bedrooms	18.14%	0.73%	24.77%	-6.64%	NO
4 bedrooms	9.54%	0.51%	13.85%	-4.30%	NO
5 or more bedrooms	4.61%	0.42%	8.26%	-3.65%	NO

Geography:	Arlington County, Virginia
Dataset: 2009 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	103,813	872	2,676	101,137	NO
0 bedrooms	4.01%	1.12%	2.06%	1.95%	NO
1 bedrooms	31.98%	2.49%	19.69%	12.28%	NO
2 bedrooms	28.84%	2.61%	33.89%	-5.05%	NO
3 bedrooms	19.76%	1.81%	23.92%	-4.16%	NO
4 bedrooms	10.81%	1.48%	13.04%	-2.24%	NO
5 or more bedrooms	4.61%	1.15%	7.40%	-2.79%	NO

Geography:	Arlington County, Virginia
Dataset: 2010 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	105,490	619	2,633	102,857	NO
0 bedrooms	5.24%	1.24%	2.32%	2.92%	NO
1 bedrooms	32.60%	2.26%	19.45%	13.15%	NO
2 bedrooms	29.83%	2.72%	30.99%	-1.16%	YES
3 bedrooms	18.46%	1.94%	25.29%	-6.83%	NO
4 bedrooms	9.95%	1.42%	14.13%	-4.18%	NO
5 or more bedrooms	3.92%	0.84%	7.82%	-3.90%	NO

Geography:	Arlington County, Virginia
Dataset: 2011 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	106,720	417	2,384	104,336	NO
0 bedrooms	3.18%	1.44%	1.68%	1.50%	NO
1 bedrooms	36.20%	3.49%	18.83%	17.37%	NO
2 bedrooms	30.56%	2.96%	32.80%	-2.24%	YES
3 bedrooms	17.17%	2.10%	26.13%	-8.96%	NO
4 bedrooms	8.10%	1.17%	12.79%	-4.70%	NO
5 or more bedrooms	4.79%	1.02%	7.76%	-2.97%	NO

Geography:	Arlington County, Virginia
Dataset: 2012 1-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	107,734	537	2,815	104,919	NO
0 bedrooms	3.90%	1.20%	1.39%	2.51%	NO
1 bedrooms	35.90%	2.32%	19.72%	16.18%	NO
2 bedrooms	30.03%	2.18%	30.69%	-0.66%	YES
3 bedrooms	17.40%	1.41%	25.51%	-8.10%	NO
4 bedrooms	9.23%	1.15%	14.88%	-5.65%	NO
5 or more bedrooms	3.53%	0.68%	7.85%	-4.32%	NO

Geography:	Arlington County, Virginia
Dataset: 2013 5-year	Table B25041. BEDROOMS [Universe: Housing Units]
Description of Variable	ACS Benchmark		Direct Estimate from MRIS
Description of Variable	Estimate	90%MOE	Estimate	Difference	Within 90%MOE?
Total	109,689	504	2,986	106,703	NO
0 bedrooms	4.31%	1.30%	1.51%	2.80%	NO
1 bedrooms	32.56%	2.12%	20.83%	11.73%	NO
2 bedrooms	31.18%	2.58%	32.22%	-1.04%	YES
3 bedrooms	17.33%	1.88%	23.11%	-5.77%	NO
4 bedrooms	9.44%	1.21%	13.16%	-3.72%	NO
5 or more bedrooms	5.17%	0.85%	9.18%	-4.01%	NO