What This Document Is
These are course notes from PSY 211QR, Introduction to Psychological Statistics at Central Michigan University, covering material from Weeks 7-9. The notes focus on applying hypothesis testing using t-tests – specifically, one-sample and two independent samples t-tests. It presents statistical problems and outlines the initial steps for approaching their solutions.
Why This Document Matters
This study guide is valuable for students enrolled in PSY 211QR who are preparing to apply t-tests to analyze data. It’s most useful when reviewing examples of how to frame statistical problems, state hypotheses, and begin the process of statistical analysis. It’s intended to support learning and practice, likely in preparation for quizzes or exams.
Common Limitations or Challenges
This document provides a starting point for problem-solving but does *not* complete the calculations or provide final conclusions for all examples. It focuses on the initial stages of hypothesis testing and doesn’t cover interpretation of results in detail. It also assumes prior knowledge of basic statistical concepts.
What This Document Provides
The notes include:
* Two worked examples demonstrating the setup for one-sample and two independent samples t-tests.
* Outlines of the steps involved in hypothesis testing (stating hypotheses, obtaining the critical region, obtaining the observed value, making a decision).
* Identification of independent and dependent variables.
* Formulas for calculating standard error and t-values.
* An example of how to write up the results of a t-test in APA style.
This preview *does not* include completed calculations, full APA write-ups for both problems, or detailed explanations of statistical assumptions.
