Skip to ContentGo to accessibility page
OpenStax Logo
Statistics

References

StatisticsReferences

References

10.1 Two Population Means with Unknown Standard Deviations

Baseball-Almanac. (2013). World series history. Retrieved from http://www.baseball-almanac.com/ws/wsmenu.shtml

Graduating Engineer + Computer Careers. (n.d.). Retrieved from http://www.graduatingengineer.com

Microsoft Bookshelf. (n.d.).

Nasdaq. (n.d.). Sectoring by industry groups. Retrieved from http://www.nasdaq.com/markets/barchart-sectors.aspx

U.S. Senate. (n.d.). Retrieved from www.senate.gov

Wikipedia. (n.d.). List of current United States Senators by age. Retrieved from http://en.wikipedia.org/wiki/List_of_current_United_States_Senators_by_age

10.2 Two Population Means with Known Standard Deviations

Centers for Disease Control and Prevention. (2008, July 18). State-specific prevalence of obesity among adults—United States, 2007. MMWR, 57(28), 765–768. Retrieved from http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5728a1.htm

Federal Bureau of Investigation. (n.d.). Texas Crime Rates 1960–1012. Available at http://www.disastercenter.com/crime/txcrime.htm

Hinduja, S. (2013). Sexting Research and Gender Differences. Cyberbulling Research Center. Retrieved from http://cyberbullying.us/blog/sexting-research-and-gender-differences/

Humes, K. R., Jones, N. A., & Ramirez, R. R. (2011 March). Overview of race and Hispanic origin: 2010 (2010 Census Briefs). Washington, DC: U.S. Census Bureau. Available online at http://www.census.gov/prod/cen2010/briefs/c2010br-02.pdf

Smith, A. (2011, July 11). 35% of American adults own a smartphone. Pew Internet. Available online at http://www.pewinternet.org/~/media/Files/Reports/2011/PIP_Smartphones.pdf

Visually. (2013). Smart phone users, by the numbers. Retrieved from http://visual.ly/smart-phone-users-numbers

10.3 Comparing Two Independent Population Proportions

American Cancer Society. (n.d.). Retrieved from http://www.cancer.org/index

Centers for Disease Control and Prevention. (n.d.). West Nile virus. Retrieved from http://www.cdc.gov/ncidod/dvbid/westnile/index.htm

Chancellor’s Office, California Community Colleges. (1994, Nov.).

Educational Resources. (n.d.).

Gallup. (2013). State of the states. Retrieved from http://www.gallup.com/poll/125066/State-States.aspx?ref=interactive

Hilton Hotels. (n.d.). Retrieved from http://www.hilton.com

Hyatt Hotels. Retrieved from http://hyatt.com

San Jose Museum of Art. (n.d.). Whitney exhibit (on loan).

U.S. Department of Health and Human Services. (n.d). Statistics. Retrieved from https://www.hhs.gov/

PreviousNext
Order a print copy
Citation/Attribution
Reuse and redistribution of this content in digital or print format:
  • This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's prior written permission.
  • This book uses the Creative Commons Attribution License, which means that you can reuse and modify the material only for noncommercial purposes, must attribute Texas Education Agency (TEA), and must distribute any derivative works under the same license. The original material is available at: https://www.texasgateway.org/book/tea-statistics . Changes were made to the original material, including updates to art, structure, and other content updates.
  • Any commercial printing of this textbook, including using a local or custom printer, must be approved by OpenStax, and proper citation provided.
  • OpenStax-copyrighted images, activities, assessments, and similar components of this book are subject to the same licensing – CC-BY-NC-SA. They can be used for noncommercial purposes with attribution. Commercial use requires permission.
  • Permission requests: Anyone who intends to incorporate this content (including text, images, and other components) into large language models, use it in AI offerings, use it commercially (including in print), and/or has questions about another use case is welcome to complete our reuse request form.
Attribution information
  • If you are redistributing all or part of this book in a noncommercial print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/statistics/pages/1-introduction

  • If you are redistributing all or part of this book in a noncommercial digital format, then for every page that includes OpenStax content, you must license the derivative work under the same CC-BY-NC-SA license as the original, and include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/statistics/pages/1-introduction

Citation information

The information below includes the information needed to generate citations in most major styles (APA, MLA, etc.); you must reformat and organize the information as needed to fit the requirements of the style. Use the information below to generate a citation. We recommend using a citation tool such as this one.

© Apr 23, 2026 Texas Education Agency (TEA). The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo, and Rice University name, and Rice University logo trademarks, or wordmarks are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.