What This Document Is
This document is a Week 3 assignment for BST 322, Introduction to Biomedical Statistics, at National University. It’s a practical exercise designed to assess students’ ability to apply chi-square tests using StatCrunch software and interpret the results. The assignment focuses on analyzing contingency tables and determining statistical significance.
Why This Document Matters
This assignment is for students enrolled in BST 322 who need to demonstrate their understanding of chi-square analysis. It’s typically used as a graded component of the course, contributing to the overall assessment of statistical skills. Successful completion requires familiarity with StatCrunch and the principles of hypothesis testing.
Common Limitations or Challenges
This assignment provides practice problems, but it does not offer comprehensive instruction on the underlying theory of chi-square tests. Students are expected to have already learned these concepts in class or through other course materials. It also assumes access to StatCrunch software.
What This Document Provides
The full assignment includes:
* Two exercises requiring the construction of labeled contingency tables using StatCrunch, including row, column, and total percentages, and the calculation of chi-square contributions.
* Data sets for both exercises, one relating to flu shots and another to knee replacement treatment with a drug supplement.
* Questions asking for short paragraph summaries of the analysis results.
* A section testing the ability to determine statistical significance based on given chi-square values, degrees of freedom, and alpha levels.
* A matching exercise linking nonparametric tests to their parametric counterparts.
* A section requiring the selection of appropriate statistical tests for different research scenarios.
* A final exercise involving a real-world dataset on smoking and depression, requiring chi-square calculation and contingency table construction in StatCrunch.
This preview does *not* include the solutions to the exercises, the completed contingency tables, or the results of the chi-square tests. It only describes the assignment’s components.
