Typically, the results from a single-case research study are evaluated using ____.
A) descriptive statistics such as the mean and standard deviation
B) inferential statistics such as a hypothesis test
C) visual inspection of a graph
D) consensus among at least three researchers

Question

Quizplus · Accepted Answer

Single-case research studies typically involve a small sample size (often just one participant), so inferential statistics are not appropriate. Instead, visual inspection of a graph is commonly used to determine whether a meaningful change has occurred over time. This involves looking at the level, trend, and variability of the data both before and after an intervention is introduced. Descriptive statistics may also be used to summarize the data, but they are not typically used to evaluate the effectiveness of the intervention. Consensus among researchers can be helpful in interpreting the results, but it is not a formal statistical method. Therefore, the best choice for evaluating the results of a single-case research study is C) visual inspection of a graph.

Typically, the Results from a Single-Case Research Study Are Evaluated