TOPIC: Application of the t-Test

The Youth Risk Behavior Survey (YRBSS) is a national survey monitoring health behavior among youth and young adults. It is administered by the Centers for Disease Control and Prevention (CDC). For this assignment, use the “Youth Risk Behavior Surveillance System Dataset” provided to practice calculating and interpreting the t-test. Refer to the instructional videos in the topic resources and the Using and Interpreting Statistics: A Practical Text for the Behavioral, Social, and Health Sciences textbook as a guide.

Part 1

Refer to the topic resources to review the documentation, questionnaires, and general information pertaining to the YRBSS and YRBS. Then use the 2015 “Youth Risk Behavior Surveillance System Dataset” and conduct a two-sample t-test to determine if weight (in kg) differs by sex. Submit the SPSS output for the t-test.

Part 2

Create an 8-10 slide PowerPoint presentation to discuss the findings for the t-test. For the presentation of your PowerPoint, use Loom to create a voice-over or a video. Refer to the topic resources for additional guidance on recording your presentation with Loom. Include an additional slide for the Loom link at the beginning and an additional slide for references at the end.

Include the following:

  1. Identify which of three t-tests was selected and explain why this is the best statistical test and whether the assumptions were met.
  2. What are the null and alternative hypotheses?
  3. What is the decision rule?
  4. What is the test statistic and p-value?
  5. Interpretation of the t-test results (What was done? What was found? What does it mean? What      suggestions are there for the creation of a health promotion intervention?).

General Requirements

Submit the SPSS exported output and the PowerPoint to the dropbox.

You are required to submit this assignment to LopesWrite.


Read Chapters 7-12 in Using and Interpreting Statistics: A Practical Text for the Behavioral, Social, and Health Sciences.


View the following tutorials from the SPSS Tutorials media.

  1. One-Sample t-Test
  2. Matched Pairs t-Test
  3. Independent Samples t-Test
  4. One-Way ANOVA
  5. Two-Way ANOVA-Between Groups


View the following calculations in The Visual Learner: Statistics media.

  1. Introduction to t-test
  2. One      Sample t-Test
  3. Two      Sample t-Test
  4. One      Way ANOVA
  5. Effect      Size One Way ANOVA
  6. Two      Way ANOVA
  7. Effect      Size Two Way ANOVA

URL: http://lc.gcumedia.com/hlt362v/the-visual-learner/the-visual-learner-v2.1.html

Read “Changing the Face of Health Education via Health Interventions: Social Ecological Perspectives on New Media Technologies and Elementary Nutrition Education,” by Bissell, Baker, Pember, Zhang, and Yang, from Health Communication (2019). URL: https://doi-org.lopes.idm.oclc.org/10.1080/10410236.2018.1507659

Read “Can a Community-Led Intervention Offering Social Support and Health Education Improve Maternal Health? A Repeated Measures Evaluation of the PACT Project Run in a Socially Deprived London Borough,” from Brown, Luderowski, Namusisi-Riley, Moore-Shelley, and Bolton, from International Journal of Environmental and Public Health (2020). URL: https://search-proquest-com.lopes.idm.oclc.org/docview/2393647115?accountid=7374

Read “Choosing the Correct Statistical Test in SAS, STATA, SPSS and R,” by Leeper, from Choosing the Right Statistic, located on the UCLA Institute for Digital Research and Education Statistical Consulting website. URL: https://stats.idre.ucla.edu/other/mult-pkg/whatstat/

Read “Variables Associated With Job Satisfaction Among Mental Health Professionals,” by Fleur, Grenier, Bamvita, and Farand, from PLoS ONE (2018). URL: https://lopes.idm.oclc.org/login?url=https://www-proquest-com.lopes.idm.oclc.org/docview/2122532147?accountid=7374

Examine the general information about the “Youth Risk Behavior Surveillance System” survey, located on the Adolescent and School Health (2018) page of the Centers for Disease Control and Prevention (CDC) website. URL: https://www.cdc.gov/healthyYouth/data/yrbs/index.htm

Review the documentation and questionnaires provided in “YRBSS Data and Documentation” (2018), located on the National YRBS Datasets and Documentation page on the Centers for Disease Control and Prevention (CDC) website. URL: https://www.cdc.gov/healthyyouth/data/yrbs/data.htm

Read “2015 YRBS Data User’s Guide” (2016), located on the Adolescent and School Health page of the Centers for Disease Control and Prevention (CDC) website. URL: https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2015/2015_yrbs-data-users_guide_smy_combined.pdf

Read the “2015 State and Local Youth Risk Behavior Survey” (YRBS), located on the Adolescent and School Health page of the Centers for Disease Control and Prevention (CDC) website. URL: https://www.cdc.gov/healthyyouth/data/yrbs/questionnaires.htm

Utilize topics from the Loom Help Center website for assistance on installing Loom software and software usage. URL: https://www.gcumedia.com/digital-resources/opentest-inc/2018/loom_1e.php

View “Conducting a t-Test and ANOVA in SPSS,” by GCU Academics – Nursing (2020). Use this resource to assist you in completing the topic assignment. URL: https://www.gcumedia.com/lms-resources/student-success-center/?mediaElement=6616F929-5B03-EB11-9111-005056BDE9D6

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