Assignment: Working With Data

To prepare for this Assignment, review the Week 4 Handout: Chi-Square Findings and follow the instructions.

Submit a 1-page paper of the following:

An analysis of the relationship between study design and statistical analysis used in the case study that includes:

  • An explanation of why you think that the agency created a plan to evaluate the program
  • An explanation of why the social work agency in the case study chose to use a chi square statistic to evaluate whether there is a difference between those who participated in the program and those who did not (Hint: Think about the level of measurement of the variables)
  • A description of the research design in terms of observations (O) and interventions (X) for each group.
    • Interpret the chi-square output data. What do the data say about the program?


Dudley, J. R. (2020). Social work evaluation: Enhancing what we do (3rd ed.) Oxford University Press.

Chapter 9, “Is the Intervention Effective?” (pp. 226–235: Read from “Determining a Causal Relationship” to “Outcome Evaluations for Practice”)

Plummer, S.-B., Makris, S., & Brocksen S. (Eds.). (2014b). Social work case studies: Concentration year. Baltimore, MD: Laureate International Universities Publishing. [Vital Source e-reader].

“Social Work Research: Chi Square” (pp. 63–65)

Document: Stocks, J. T. (2010). Statistics for social workers. In B. Thyer (Ed.), The handbook of social work research methods (2nd ed., pp. 75–118). Thousand Oaks, CA: Sage. (PDF)


Trochim, W. M. K. (2006). Internal validity. Retrieved from


Document:Week 4: A Short Course in Statistics Handout (PDF)


Document: Week 4: Handout: Chi-Square findings (PDF)


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