Discussion: Selection of a Statistical Analysis Approach

To prepare for this Discussion, review the handout, A Short Course in Statistics. If necessary, locate and review online resources concerning internal validity and threats to internal validity. Then, review the Social Work Research: Chi Square case study located in this weeks resources. Consider the confounding variables, that is, factors that might explain the difference between those in the program and those waiting to enter the program.
By Day 3
Post an interpretation of the case studys conclusion that the vocational rehabilitation intervention program may be effective at promoting full-time employment. Describe the factors limiting the internal validity of this study, and explain why those factors limit the ability to draw conclusions regarding cause and effect relationships.