Which of the following is true of the one-shot case study preexperimental design (X O₁)? A)It does not provide a basis of comparing the level of O₁ to what would happen when X was absent. B)There is no random assignment of test units. C)Both A and B are correct. D)In this design,a group of test units is measured twice.

Question

Quizplus · Accepted Answer

The one-shot case study preexperimental design (X O₁) does not have a control group or random assignment of test units. Therefore, it does not provide a basis for comparing the level of O₁ to what would happen when X was absent. Additionally, in this design, a group of test units is only measured once, which limits the ability to draw conclusions about causality.

Which of the Following Is True of the One-Shot Case