A Group of Cancer Patients Is Divided into Two Groups

question 27

Multiple Choice

A group of cancer patients is divided into two groups. One group is given a new drug to fight the side effects of chemotherapy and the other group is given a placebo. After three months they are asked to respond to a questionnaire about the frequency and severity of their side effects to see whether the new drug improved the overall negative side effects of chemotherapy.

• A)Controlled experiment
• B)Observational study

---

Definitions:

Manipulates Factors

The process of deliberately altering variables in an experiment to determine their effect on a desired outcome.

Mental Process

The internal operations of the mind that include thinking, feeling, and decision-making.

Self-Correcting Process

A mechanism or system that is designed to identify and correct errors or deviations from a desired state or norm automatically.

Manipulates Factors

To control or alter variables or components in an experimental setting to determine their effects on an outcome.