PRACTICE SOLUTION 2026 TESTED
QUESTIONS AND EXPERT VERIFIED ANSWERS
GUARANTEED TO PASS
◉ Bias.
Answer: A systematic error or deviation in results or processes that
can lead to inaccurate outcomes.
◉ Case Study.
Answer: An in-depth analysis of an individual, group, or event to
explore specific phenomena.
◉ Causation.
Answer: A relationship where one variable directly affects or causes
a change in another.
◉ Confounding Variable.
Answer: An outside variable that may influence both independent
and dependent variables, potentially distorting results.
◉ Control Group.
,Answer: A group in an experiment that does not receive the
intervention or treatment, used for comparison.
◉ Correlation.
Answer: A statistical relationship between two variables, indicating
how one may predict or be associated with the other.
◉ Cross-Sectional Study.
Answer: A type of study that examines data from a population at a
single point in time.
◉ Dependent Variable.
Answer: The variable being measured or tested in response to
changes in the independent variable.
◉ Double-Blind Study.
Answer: A study design in which neither the participants nor the
researchers know who is in the experimental or control group,
reducing bias.
◉ Effectiveness.
Answer: A measure of how well a treatment works in real-world
conditions.
,◉ Efficacy.
Answer: A measure of how well a treatment works under ideal
conditions.
◉ Ethics.
Answer: Principles and guidelines ensuring the protection and well-
being of research participants.
◉ Experimental Group.
Answer: A group in an experiment that receives the intervention or
treatment being tested.
◉ External Validity.
Answer: The degree to which results from a research study are
generalizable (applicable) back to the population or other groups or
environments.
◉ History.
Answer: A threat to internal validity where an unrelated event
influences the outcomes of a study.
◉ Hypothesis.
Answer: A testable statement predicting the relationship between
two or more variables.
, ◉ Independent Variable.
Answer: The variable that is manipulated or controlled by the
researcher to observe its effect.
◉ Incidence.
Answer: The occurrence of new cases of a disease or condition
within a specified time frame.
◉ Informed Consent.
Answer: A process in which participants are fully informed about
the research and voluntarily agree to participate.
◉ Instrumentation.
Answer: A threat to internal validity where different measures are
used in pre-test and post-test phases.
◉ Internal Validity.
Answer: The degree to which results from a research study are due
to the manipulation of the independent variable and not from other
factors.
◉ Literature Review.