Heimildir
11.1 Staðreyndir um kí-kvaðrat dreifingu
Parade Magazine. (án dags.). Sótt af https://parade.com/
Santa Clara County Public Health Department. (2011, maí). HIV/AIDS epidemiology Santa Clara County. Sótt af http://sccgov.iqm2.com/Citizens/FileOpen.aspx?Type=4&ID=32762
11.2 Mátgæðapróf
College Board. (án dags.). Sótt af http://www.collegeboard.com
Ma, Y., o.fl. (2003). Association between eating patterns and obesity in a free-living US adult population. American Journal of Epidemiology 158(1), 85–92.
Ogden, C. L., o.fl. (2012, janúar). Prevalence of obesity in the United States, 2009–2010 (NCHS Data Brief No. 82). Hyattsville, MD: National Center for Health Statistics. Sótt af http://www.cdc.gov/nchs/data/databriefs/db82.pdf
Stevens, B. J. (án dags.). Multi-family and commercial solid waste and recycling survey. Arlington County, VA. Sótt af http://www.arlingtonva.us/departments/EnvironmentalServices/SW/file84429.pdf
U.S. Census Bureau. (án dags.). Current population reports. Sótt af https://www.census.gov/main/www/cprs.html
U.S. Census Bureau. (án dags.). Sótt af https://www.census.gov/
11.3 Próf á óhæði
Harris Interactive. (án dags.). Sótt af http://www.statisticbrain.com/favorite-flavor-of-ice-cream/
Statistics Brain. (2016, 29. júní). Youngest online entrepreneurs list. Sótt af http://www.statisticbrain.com/youngest-online-entrepreneur-list
11.4 Próf á einsleitni
Bielick, S. (2008, desember). 1.5 million homeschooled students in the United States in 2007 (NCES 2009030). Washington, DC: National Center for Education Statistics. Sótt af http://nces.ed.gov/pubsearch/pubsinfo.asp?pubid=2009030
Bielick, S. (2008, desember). 1.5 million homeschooled students in the United States in 2007—supplemental tables (NCES 2009030). Washington, DC: National Center for Education Statistics. Sótt af http://nces.ed.gov/pubs2009/2009030_sup.pdf
Insurance Institute for Highway Safety. (án dags.). Ratings. Sótt af www.iihs.org/iihs/ratings
World Bank Group. (2014). Energy use (kg of oil equivalent per capita). Sótt af http://data.worldbank.org/indicator/EG.USE.PCAP.KG.OE/countries
11.6 Próf á dreifni í einu þýði
Apple Insider. (án dags.). Sótt af http://appleinsider.com/mac_price_guide
World Bank. (án dags.). Sótt af http://www.worldbank.org/