Question

question 4 of 10
which of the following is used to avoid bias in a clinical trial?
a. double - blind testing
b. unfair prejudice
c. data manipulation
d. personal interest

Explanation:

Double - blind testing is a method where neither the participants nor the researchers know who is in the treatment or control group. This helps avoid bias. Unfair prejudice (B) is a form of bias itself. Data manipulation (C) is unethical and creates bias. Personal interest (D) can lead to biased results. So, double - blind testing (A) is used to avoid bias in a clinical trial.

Answer:

A. Double - blind testing