Choose the correct order of events for a true experimental design:

A. Random selection of total sample units

B. Exposure to the treatment

C. Identification of population

D. Random assignment of treatment to one group

E. Random division of sampled units into two (one for experimental and one for control) groups

Choose the correct answer from the options given below:

Correct option is A

The correct sequence for a true experimental design is: Identification of population (C), Random selection of sample units (A), Random division into experimental and control groups (E), Random assignment of treatment (D), and finally Exposure to treatment (B). This ensures that the experiment is conducted with proper randomization and control measures.
Information booster:
1. Identification of Population: First, the group or population to be studied is defined.
2. Random Selection: A sample is randomly chosen from the identified population to ensure it represents the larger group.
3. Random Division: The selected sample is randomly divided into two groups— experimental and control.
4. Random Assignment of Treatment: One group is assigned the treatment (experimental group), while the control group does not receive it.
5. Exposure to Treatment: The experimental group is exposed to the treatment, and results are compared between groups.
Additional Knowledge:
· Randomization is crucial in experimental design to avoid bias.
· Control groups are essential for comparison, ensuring the effect is due to the treatment and not other factors.
· True experimental designs include pretests and posttests to assess the impact of the intervention.
Key Points:
· A true experimental design involves randomization at both the selection and assignment stages to ensure the validity of the experiment.
· Control groups allow for comparisons, which are essential for determining the effect of the treatment.
· Experimental designs are key to determining causal relationships between variables.