1. (55 pts) Consider the data in the Problem 1 tab which shows historical household sizes for all races by median and mean income from 1975-2016. For each part, you must show your relevant hypothesis, analysis and interpretation. for all parts. a. (10 pts) Consider all households and divide your data into two samples: 1: 1975- 1995, 2: 1996-2016. Is there a difference in mean income (in 2016 dollars) between the two groups? Use =0.05 b. (15 pts) What is the power of your test in Part a? c. (15 pts) If you desire a power of 99%, what sample size would have been necessary? d. (15 pts) Is there difference in mean income (in 2016 dollars) between households with 1 person, 2 people, 3 people, 4 people, 5 people, 6 people and 7 or more people? If a difference exists, which ones are different? Use =0.05 2. (15 pts) A physical therapist is investigating a new type of therapy for shoulder injuries. The therapist measures the rotation (in mm) of the range of anterior motion for the injured arm for 19 patients. Estimate the true average difference in rotation before physical therapy (Pre PT) and after physical therapy (Post PT). Can you say that the therapy is useful? Data is in the Problem 2 tab. Use =0.05. 3. (20 pts) The Army is concerned about the permeability of their parachutes. It is thought to be due to the effects of three factors: temperature, fabric denier and air pressure. A test is performed with each of these factors at three levels. The data is in the Problem 3 tab. Analyze fully this data making sure you state your hypothesis(es), any assumptions and conclusions. 4. (10 pts) Budgets were cut and the Army could no longer afford to run many tests. They still though that parachute permeability was due to temperature, fabric denier and air pressure but only ran the tests shown in the Problem 4 tab. Are your results different than Problem 3? Analyze this data and compare this to your results in Problem 3.

Table with row headers in column A and column headers in rows 5 and 6, 51 through 52,97 through 98,143 through 144,189 through 190,235 through 236,281 through 282,327 through 328
Table H-11. Size of Household - All Races, by Median and Mean Income: 1975 to 2016
(Households as of March of the following year. Income in current and 2016 CPI-U-RS adjusted dollars(28))
All Households
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	1,26,224	59,039	59,039	83,143	83,143	2.54
2015	1,25,819	56,516	57,230	79,263	80,265	2.53
2014	1,24,587	53,657	54,398	75,738	76,783	2.54
2013	1,22,952	51,939	53,518	72,641	74,849	2.55
2012	1,22,459	51,017	53,331	71,274	74,507	2.54
2011	1,21,084	50,054	53,401	69,677	74,336	2.55
2010	1,19,927	49,276	54,245	67,392	74,188	2.56
2009	1,17,538	49,777	55,683	67,976	76,042	2.59
2008	1,17,181	50,303	56,076	68,424	76,277	2.57
2007	1,16,783	50,233	58,149	67,609	78,263	2.56
2006	1,16,011	48,201	57,379	66,570	79,246	2.56
2005	1,14,384	46,326	56,935	63,344	77,850	2.57
2004	1,13,343	44,334	56,332	60,466	76,830	2.57
2003	1,12,000	43,318	56,528	59,067	77,080	2.57
2002	1,11,278	42,409	56,599	57,852	77,209	2.57
2001	1,09,297	42,228	57,246	58,208	78,909	2.58
2000	1,08,209	41,990	58,544	57,135	79,659	2.58
1999	1,06,434	40,696	58,665	54,737	78,905	2.60
1998	1,03,874	38,885	57,248	51,855	76,343	2.61
1997	1,02,528	37,005	55,218	49,692	74,149	2.62
1996	1,01,018	35,492	54,105	47,123	71,836	2.64
1995	99,627	34,076	53,330	44,938	70,329	2.65
1994	98,990	32,264	51,710	43,133	69,130	2.65
1993	97,107	31,241	51,116	41,428	67,784	2.67
1992	96,426	30,636	51,390	38,840	65,152	2.66
1991	95,669	30,126	51,791	37,922	65,194	2.62
1990	94,312	29,943	53,350	37,403	66,641	2.63
1989	93,347	28,906	54,042	36,520	68,277	2.63
1988	92,830	27,225	53,124	34,017	66,377	2.62
1987	91,124	26,061	52,690	32,410	65,526	2.64
1986	89,479	24,897	52,068	30,759	64,328	2.66
1985	88,458	23,618	50,258	29,066	61,851	2.67
1984	86,789	22,415	49,335	27,464	60,448	2.69
1983	85,407	20,885	47,881	25,401	58,234	2.71
1982	83,918	20,171	48,219	24,309	58,111	2.73
1981	83,527	19,074	48,350	22,787	57,762	2.72
1980	82,368	17,710	49,131	21,063	58,433	2.73
1979	80,776	16,461	50,780	19,554	60,321	2.76
1978	77,330	15,064	50,877	17,730	59,881	2.78
1977	76,030	13,572	48,981	16,100	58,105	2.81
1976	74,142	12,686	48,673	14,922	57,252	2.86
1975	72,867	11,800	47,879	13,779	55,909	2.89
Households with One Person
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	35,252	30,367	30,367	43,567	43,567	(X)
2015	35,388	28,800	29,164	41,933	42,463	(X)
2014	34,866	27,377	27,755	40,263	40,819	(X)
2013	33,853	26,379	27,181	38,752	39,930	(X)
2012	33,570	26,251	27,442	38,386	40,127	(X)
2011	33,188	25,902	27,634	37,413	39,915	(X)
2010	33,020	25,453	28,020	37,340	41,105	(X)
2009	31,399	26,080	29,175	37,715	42,190	(X)
2008	31,657	25,642	28,585	36,655	40,862	(X)
2007	32,167	25,703	29,753	36,672	42,451	(X)
2006	31,132	25,504	30,360	36,308	43,221	(X)
2005	30,453	23,736	29,172	34,400	42,278	(X)
2004	30,137	22,561	28,667	32,348	41,102	(X)
2003	29,586	21,930	28,618	31,272	40,809	(X)
2002	29,431	21,523	28,724	31,244	41,698	(X)
2001	28,775	21,761	29,500	31,724	43,006	(X)
2000	28,207	21,459	29,919	30,579	42,634	(X)
1999	27,242	20,971	30,230	30,375	43,787	(X)
1998	26,606	20,154	29,671	27,982	41,196	(X)
1997	26,327	18,762	27,996	27,115	40,460	(X)
1996	25,402	17,897	27,283	26,336	40,147	(X)
1995	24,900	17,063	26,704	24,592	38,487	(X)
1994	24,732	16,222	25,999	23,430	37,552	(X)
1993	23,611	16,065	26,285	22,217	36,351	(X)
1992	23,558	15,420	25,866	21,348	35,810	(X)
1991	23,974	15,441	26,546	20,984	36,075	(X)
1990	23,590	15,344	27,339	20,644	36,782	(X)
1989	22,999	14,829	27,724	20,306	37,963	(X)
1988	22,708	13,982	27,283	19,007	37,088	(X)
1987	21,933	12,743	25,764	17,563	35,509	(X)
1986	21,128	12,154	25,418	16,442	34,386	(X)
1985	21,178	11,884	25,288	15,997	34,041	(X)
1984	20,602	11,511	25,336	15,327	33,735	(X)
1983	19,954	10,747	24,638	14,162	32,468	(X)
1982	19,250	9,984	23,867	13,343	31,897	(X)
1981	19,354	9,191	23,298	12,308	31,199	(X)
1980	18,936	8,162	22,643	10,981	30,463	(X)
1979	18,296	7,353	22,683	9,934	30,645	(X)
1978	17,201	6,669	22,524	9,154	30,917	(X)
1977	16,715	5,905	21,311	8,206	29,616	(X)
1976	15,532	5,365	20,584	7,400	28,392	(X)
1975	14,983	4,806	19,501	6,688	27,137	(X)
Households with Two People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	43,509	65,627	65,627	88,357	88,357	(X)
2015	42,785	63,850	64,657	84,378	85,444	(X)
2014	41,881	60,406	61,240	79,743	80,844	(X)
2013	41,059	60,839	62,688	80,531	82,978	(X)
2012	41,503	56,727	59,300	76,201	79,657	(X)
2011	40,983	55,555	59,270	74,686	79,680	(X)
2010	40,136	54,507	60,004	71,051	78,216	(X)
2009	39,487	53,676	60,045	70,687	79,074	(X)
2008	39,242	55,418	61,778	72,260	80,553	(X)
2007	38,737	54,841	63,483	72,200	83,578	(X)
2006	38,580	51,536	61,349	68,660	81,734	(X)
2005	37,775	49,294	60,582	65,336	80,298	(X)
2004	37,446	47,160	59,923	62,986	80,032	(X)
2003	37,366	46,924	61,234	62,342	81,354	(X)
2002	37,078	45,556	60,799	60,478	80,714	(X)
2001	36,240	45,245	61,336	60,689	82,272	(X)
2000	35,917	44,459	61,986	59,335	82,726	(X)
1999	35,314	43,308	62,430	57,394	82,736	(X)
1998	34,262	41,512	61,115	54,930	80,870	(X)
1997	32,965	39,343	58,706	52,221	77,923	(X)
1996	32,736	37,283	56,835	48,563	74,031	(X)
1995	32,526	35,700	55,871	46,162	72,245	(X)
1994	31,834	33,955	54,421	44,554	71,408	(X)
1993	31,211	32,434	53,068	42,374	69,332	(X)
1992	31,041	31,816	53,370	39,954	67,021	(X)
1991	30,734	31,221	53,674	39,724	68,292	(X)
1990	30,181	31,358	55,871	39,233	69,902	(X)
1989	30,114	29,862	55,829	37,581	70,260	(X)
1988	29,976	28,021	54,677	34,839	67,981	(X)
1987	29,316	26,522	53,622	32,666	66,044	(X)
1986	28,602	25,293	52,896	31,302	65,463	(X)
1985	27,732	23,867	50,788	29,525	62,827	(X)
1984	27,389	22,614	49,773	27,873	61,348	(X)
1983	26,890	21,064	48,291	25,524	58,516	(X)
1982	26,439	20,200	48,288	24,550	58,687	(X)
1981	26,486	18,908	47,929	22,875	57,985	(X)
1980	25,787	17,506	48,565	20,943	58,100	(X)
1979	25,327	16,103	49,676	19,223	59,300	(X)
1978	23,928	14,453	48,813	17,330	58,530	(X)
1977	23,334	13,072	47,177	15,638	56,438	(X)
1976	22,775	12,206	46,832	14,354	55,073	(X)
1975	22,321	11,171	45,327	13,283	53,896	(X)
Households with Three People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	19,509	76,986	76,986	99,352	99,352	(X)
2015	19,423	73,990	74,925	96,000	97,213	(X)
2014	19,309	70,979	71,959	90,737	91,989	(X)
2013	19,592	68,400	70,479	88,393	91,079	(X)
2012	19,283	64,614	67,545	83,159	86,931	(X)
2011	19,241	63,370	67,607	81,935	87,414	(X)
2010	18,717	62,609	68,923	78,388	86,293	(X)
2009	18,638	62,472	69,885	80,106	89,611	(X)
2008	18,606	63,830	71,155	80,140	89,337	(X)
2007	18,522	64,403	74,552	79,691	92,249	(X)
2006	18,808	61,436	73,134	78,201	93,091	(X)
2005	18,924	58,917	72,409	74,879	92,026	(X)
2004	18,285	57,917	73,591	72,071	91,576	(X)
2003	17,968	55,726	72,720	69,053	90,111	(X)
2002	17,889	54,783	73,113	67,666	90,307	(X)
2001	17,742	54,481	73,856	68,221	92,483	(X)
2000	17,444	53,097	74,029	66,421	92,606	(X)
1999	17,366	51,214	73,827	63,055	90,896	(X)
1998	17,386	49,069	72,241	60,356	88,858	(X)
1997	17,331	47,115	70,304	57,466	85,749	(X)
1996	17,065	44,813	68,314	54,782	83,511	(X)
1995	16,724	42,244	66,113	52,086	81,516	(X)
1994	16,827	41,043	65,781	49,741	79,721	(X)
1993	16,898	39,414	64,489	48,030	78,586	(X)
1992	16,964	38,604	64,756	45,685	76,634	(X)
1991	16,398	38,244	65,748	44,238	76,052	(X)
1990	16,082	36,765	65,504	43,436	77,390	(X)
1989	16,128	36,277	67,822	42,723	79,873	(X)
1988	16,276	33,946	66,239	39,372	76,827	(X)
1987	16,167	32,433	65,573	38,068	76,965	(X)
1986	16,159	31,003	64,838	35,967	75,219	(X)
1985	16,088	29,657	63,108	34,300	72,988	(X)
1984	15,465	27,928	61,469	31,983	70,395	(X)
1983	15,134	25,707	58,936	29,338	67,260	(X)
1982	14,793	24,445	58,436	27,699	66,215	(X)
1981	16,417	23,600	59,823	26,539	67,273	(X)
1980	14,569	21,736	60,300	24,387	67,654	(X)
1979	14,130	20,248	62,462	22,614	69,761	(X)
1978	13,392	18,174	61,381	20,349	68,727	(X)
1977	13,040	16,367	59,069	18,406	66,427	(X)
1976	12,794	15,139	58,085	16,945	65,014	(X)
1975	12,520	14,083	57,142	15,702	63,711	(X)
Households with Four People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	16,212	91,036	91,036	1,16,859	1,16,859	(X)
2015	16,267	87,739	88,848	1,11,190	1,12,595	(X)
2014	16,464	83,613	84,767	1,07,759	1,09,246	(X)
2013	16,486	81,484	83,960	1,04,821	1,08,007	(X)
2012	16,361	78,177	81,723	96,967	1,01,365	(X)
2011	16,049	74,913	79,922	94,419	1,00,733	(X)
2010	16,049	73,445	80,851	92,672	1,02,017	(X)
2009	16,122	73,071	81,741	92,287	1,03,237	(X)
2008	16,099	75,746	84,439	93,245	1,03,946	(X)
2007	15,865	75,263	87,123	90,998	1,05,338	(X)
2006	16,172	72,870	86,745	92,401	1,09,995	(X)
2005	15,998	69,605	85,545	86,517	1,06,329	(X)
2004	16,382	65,786	83,590	81,886	1,04,047	(X)
2003	16,065	64,374	84,005	80,003	1,04,401	(X)
2002	15,967	62,467	83,368	76,905	1,02,637	(X)
2001	15,794	62,595	84,856	78,353	1,06,218	(X)
2000	15,692	62,349	86,929	78,246	1,09,093	(X)
1999	15,495	59,556	85,852	72,594	1,04,647	(X)
1998	15,030	55,886	82,277	67,691	99,657	(X)
1997	15,358	53,165	79,331	66,457	99,165	(X)
1996	15,396	51,405	78,363	61,966	94,463	(X)
1995	15,118	49,531	77,517	59,564	93,219	(X)
1994	15,321	46,757	74,939	56,785	91,011	(X)
1993	15,073	45,087	73,771	55,516	90,835	(X)
1992	14,997	44,017	73,836	50,479	84,676	(X)
1991	14,710	43,054	74,017	49,138	84,476	(X)
1990	14,556	41,473	73,893	48,223	85,919	(X)
1989	14,456	40,744	76,174	47,436	88,685	(X)
1988	14,550	38,690	75,496	44,409	86,655	(X)
1987	14,202	37,054	74,915	42,800	86,533	(X)
1986	13,984	34,658	72,482	39,696	83,018	(X)
1985	13,774	32,703	69,590	37,161	79,076	(X)
1984	13,631	31,033	68,304	34,891	76,795	(X)
1983	13,593	29,187	66,914	32,702	74,972	(X)
1982	13,303	27,617	66,019	30,933	73,946	(X)
1981	12,868	26,323	66,725	29,031	73,590	(X)
1980	12,768	24,410	67,718	26,921	74,684	(X)
1979	12,666	22,480	69,348	25,049	77,273	(X)
1978	12,274	20,462	69,108	22,562	76,201	(X)
1977	11,955	18,657	67,333	20,703	74,717	(X)
1976	11,630	17,133	65,736	18,975	72,803	(X)
1975	11,407	15,849	64,308	17,494	70,983	(X)
Households with Five People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	7,319	83,521	83,521	1,09,232	1,09,232	(X)
2015	7,548	78,622	79,616	1,01,257	1,02,537	(X)
2014	7,517	74,875	75,908	98,621	99,982	(X)
2013	7,689	74,482	76,746	1,00,862	1,03,927	(X)
2012	7,425	71,585	74,832	95,211	99,530	(X)
2011	7,271	70,652	75,376	92,873	99,083	(X)
2010	7,448	68,856	75,800	90,282	99,386	(X)
2009	7,367	69,680	77,948	89,864	1,00,527	(X)
2008	7,406	69,271	77,221	89,996	1,00,324	(X)
2007	7,332	70,977	82,162	90,523	1,04,788	(X)
2006	7,202	66,823	79,547	88,734	1,05,630	(X)
2005	7,306	66,487	81,712	84,641	1,04,024	(X)
2004	7,166	62,340	79,211	79,395	1,00,882	(X)
2003	7,150	60,128	78,465	76,212	99,454	(X)
2002	7,029	61,623	82,242	78,965	1,05,386	(X)
2001	6,948	59,898	81,200	75,709	1,02,634	(X)
2000	6,978	59,689	83,220	74,789	1,04,273	(X)
1999	7,076	54,147	78,055	68,414	98,621	(X)
1998	6,962	53,706	79,068	66,523	97,937	(X)
1997	7,048	50,407	75,216	63,043	94,071	(X)
1996	6,774	47,841	72,930	61,601	93,906	(X)
1995	6,631	45,710	71,537	58,953	92,263	(X)
1994	6,616	44,135	70,736	55,411	88,809	(X)
1993	6,749	42,241	69,115	52,473	85,856	(X)
1992	6,404	42,146	70,698	48,707	81,704	(X)
1991	6,389	40,792	70,128	47,057	80,899	(X)
1990	6,206	39,275	69,977	46,834	83,445	(X)
1989	6,213	39,281	73,438	46,036	86,067	(X)
1988	6,232	36,023	70,292	42,864	83,641	(X)
1987	6,055	35,731	72,241	41,766	84,442	(X)
1986	6,162	34,165	71,451	39,555	82,723	(X)
1985	6,276	31,757	67,577	36,495	77,659	(X)
1984	6,108	30,824	67,844	35,499	78,133	(X)
1983	6,070	28,029	64,259	32,382	74,239	(X)
1982	6,105	27,176	64,964	30,978	74,053	(X)
1981	6,103	26,130	66,236	29,056	73,653	(X)
1980	6,117	24,856	68,955	28,126	78,027	(X)
1979	6,059	23,389	72,152	26,621	82,122	(X)
1978	6,187	21,002	70,932	23,686	79,997	(X)
1977	6,356	19,064	68,802	21,382	77,168	(X)
1976	6,285	17,723	67,999	19,910	76,390	(X)
1975	6,268	16,489	66,905	18,600	75,470	(X)
Households with Six People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	2,798	82,214	82,214	1,09,637	1,09,637	(X)
2015	2,813	77,343	78,320	1,02,366	1,03,660	(X)
2014	2,820	70,798	71,775	95,153	96,466	(X)
2013	2,972	68,157	70,228	87,905	90,577	(X)
2012	2,735	67,634	70,702	89,078	93,119	(X)
2011	2,734	66,930	71,406	86,468	92,250	(X)
2010	2,820	65,770	72,402	84,151	92,637	(X)
2009	2,784	62,745	70,190	83,221	93,096	(X)
2008	2,640	67,158	74,865	90,103	1,00,444	(X)
2007	2,694	64,827	75,043	81,941	94,854	(X)
2006	2,702	61,859	73,638	83,784	99,737	(X)
2005	2,562	61,342	75,389	80,886	99,409	(X)
2004	2,497	57,139	72,603	74,925	95,202	(X)
2003	2,476	58,109	75,830	75,182	98,109	(X)
2002	2,521	56,097	74,867	72,058	96,168	(X)
2001	2,438	57,548	78,014	73,315	99,388	(X)
2000	2,555	53,776	74,976	71,030	99,032	(X)
1999	2,484	51,755	74,607	69,807	1,00,629	(X)
1998	2,367	49,080	72,257	63,626	93,672	(X)
1997	2,232	46,465	69,334	57,483	85,774	(X)
1996	2,311	42,438	64,694	56,490	86,115	(X)
1995	2,357	44,263	69,273	56,235	88,009	(X)
1994	2,279	42,683	68,409	57,326	91,878	(X)
1993	2,186	41,094	67,238	51,259	83,870	(X)
1992	2,217	37,096	62,227	47,083	78,979	(X)
1991	2,126	36,894	63,427	45,677	78,526	(X)
1990	2,237	38,159	67,988	45,251	80,624	(X)
1989	2,143	35,304	66,003	44,644	83,465	(X)
1988	2,003	36,911	72,024	42,818	83,551	(X)
1987	2,159	33,478	67,685	39,092	79,036	(X)
1986	2,176	32,829	68,657	39,066	81,700	(X)
1985	2,138	31,091	66,160	36,257	77,153	(X)
1984	2,299	28,311	62,312	33,489	73,709	(X)
1983	2,372	26,888	61,643	31,672	72,611	(X)
1982	2,460	27,191	65,000	31,410	75,086	(X)
1981	2,480	26,944	68,299	29,942	75,899	(X)
1980	2,549	24,415	67,732	27,880	77,345	(X)
1979	2,519	22,805	70,350	26,225	80,901	(X)
1978	2,573	20,808	70,277	23,956	80,909	(X)
1977	2,723	19,077	68,849	21,800	78,676	(X)
1976	2,864	17,648	67,711	20,336	78,025	(X)
1975	3,001	16,142	65,497	18,043	73,210	(X)
Households with Seven or More People
Size of Household and year	Number (thousands)	Median income	Mean income	Average Household Size
Current dollars	2016 dollars	Current dollars	2016 dollars
2016	1,624	79,194	79,194	1,07,975	1,07,975	(X)
2015	1,596	70,514	71,405	96,066	97,280	(X)
2014	1,729	73,665	74,682	90,540	91,790	(X)
2013	1,540	63,711	65,647	90,845	93,606	(X)
2012	1,581	66,612	69,634	86,165	90,073	(X)
2011	1,617	63,946	68,222	80,838	86,244	(X)
2010	1,738	60,374	66,462	76,727	84,464	(X)
2009	1,740	64,667	72,340	80,277	89,802	(X)
2008	1,529	67,293	75,016	81,931	91,334	(X)
2007	1,467	63,823	73,880	78,371	90,721	(X)
2006	1,415	60,864	72,453	79,887	95,098	(X)
2005	1,366	56,796	69,802	75,543	92,842	(X)
2004	1,430	58,323	74,107	73,188	92,995	(X)
2003	1,388	60,521	78,977	74,702	97,483	(X)
2002	1,364	56,352	75,207	73,813	98,510	(X)
2001	1,360	54,560	73,963	71,388	96,776	(X)
2000	1,415	54,133	75,474	69,882	97,431	(X)
1999	1,458	52,007	74,970	64,627	93,162	(X)
1998	1,261	46,646	68,674	62,922	92,636	(X)
1997	1,267	42,343	63,183	55,455	82,748	(X)
1996	1,334	40,337	61,491	48,574	74,048	(X)
1995	1,372	39,013	61,056	49,709	77,796	(X)
1994	1,382	36,622	58,695	48,996	78,527	(X)
1993	1,379	33,120	54,191	44,401	72,649	(X)
1992	1,244	33,159	55,623	43,132	72,352	(X)
1991	1,338	34,136	58,685	43,341	74,510	(X)
1990	1,459	36,108	64,334	43,914	78,242	(X)
1989	1,295	32,644	61,030	41,624	77,819	(X)
Table with row headers in column A and column headers in rows 5 and 6, 51 through 52,97 through 98,143 through 144,189 through 190,235 through 236,281 through 282,327 through 328	1,084	31,676	61,809	38,708	75,531	(X)
Table H-11. Size of Household - All Races, by Median and Mean Income: 1975 to 2016	1,291	31,166	63,011	38,636	78,114	(X)
1986	1,268	27,836	58,215	35,159	73,529	(X)
1985	1,272	28,260	60,136	34,053	72,463	(X)
1984	1,296	26,288	57,860	31,132	68,521	(X)
1983	1,394	23,423	53,699	28,916	66,292	(X)
1982	1,568	23,717	56,696	29,564	70,673	(X)
1981	1,619	24,558	62,251	28,512	72,274	(X)
1980	1,643	23,331	64,725	27,280	75,680	(X)
1979	1,778	22,598	69,712	26,274	81,052	(X)
1978	1,774	20,216	68,277	23,272	78,599	(X)
1977	1,906	17,266	62,313	20,578	74,266	(X)
1976	2,263	16,428	63,031	19,296	74,034	(X)
1975	2,367	14,623	59,333	17,074	69,278	(X)
Source: U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplements. For information on confidentiality protection, sampling error, nonsampling error, and definitions, see //www2.census.gov/programs-surveys/cps/techdocs/cpsmar17.pdf