Variables and Experiments
Control variables help make an experiment _________________.
Fair
What term refers the extent to which a test, experiment, or investigation measures what it is intended to measure.
Validity
This is increased, the more times an experiment is repeated.
Reliability
What type of data uses numbers?
Quantitative
A conclusion is considered ___________-__________ if it uses credible research.
Evidence-based
What variable is measured in an experiment?
Dependent variable
Validity is ____________ when better controls are used in an experiment?
Improved
High reliability means results are ______________ and can be reproduced.
Consistent
What type of data uses descriptive words?
Qualitative
_____________ data depends on individual perspectives and may be influenced by bias.
Subjective
What variable is changed in an experiment?
Independent variable
______________ refers to how close a measurement is to the true value.
Accuracy
_______________ is the term for conducting an experiment multiple times.
Repetition
What type of interview allows free responses?
Open-ended
__________ data is reliable and unbiased because it can be independently verified and measured.
Objective
What do control variables do in an experiment?
Keep the experiment fair
What must experimental data do in relation to the hypothesis?
Support the hypothesis
What type of reliability involves repeating a test over time?
Test-retest
What type of responses are yes/no options?
Fixed response
This type of bias occurs when a researcher’s expectations influence the results of a study.
Experimenter bias
What is increased to improve experiments?
Sample size
What must conclusions relate back to?
The hypothesis
What type of reliability involves agreement between observers?
Inter-rater
This sampling method gives every member of a population an equal chance of being selected.
Random sampling
Give the term for a source that is checked by experts?
Peer-reviewed