1. In an experiment, the researcher manipulates the
variable and measures the variable.
- a) Dependent; independent
- b) Independent; dependent
- c) Control; experimental
- d) Predictor; outcome
Correct Answer: b) Independent; dependent
Explanation: In experimental research, the independent variable is
deliberately manipulated to observe its effect on the dependent variable, which
is subsequently measured as the outcome.
2. In measurement, refers to consistency of answers,
whereas refers to accuracy or truth of answers.
- a) Validity; reliability
- b) Reliability; validity
- c) Objectivity; subjectivity
- d) Accuracy; precision
Correct Answer: b) Reliability; validity
Explanation: Reliability indicates the consistency or
repeatability of a measure, while validity refers to the degree
,to which an instrument accurately measures what it intends to measure.
, 3. In a research study, Doctor Akiva assigns some participants to drink 1 cup
of coffee before doing a manual dexterity task and other
participants to drink 3 cups of coffee before doing a manual dexterity task to test
if caffeine affects performance. What is the independent variable?
- a) Performance on the task
- b) Number of participants
- c) Amount of coffee
- d) Type of task
Correct Answer: c) Amount of coffee
Explanation: The amount of coffee consumed is the independent variable, as
it is manipulated to examine its effect on manual dexterity.
4. statistics summarize data from a sample,
whereas statistics allow researchers to generalize to a
broader population.
- a) Inferential; descriptive
- b) Correlational; experimental
- c) Descriptive; inferential
- d) Primary; secondary
Correct Answer: c) Descriptive; inferential
Explanation: Descriptive statistics characterize or describe data from a
specific group, while inferential statistics are used to make conclusions or
inferences about a larger population based on the sample data.