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Questions and Answers
What does an independent variable typically represent in an experiment?
What does an independent variable typically represent in an experiment?
- A variable that remains constant throughout the experiment
- A variable that is measured as an outcome
- A variable that is manipulated by the researcher (correct)
- A variable that only changes under specific conditions
What is a precise measurable definition of what is being studied called?
What is a precise measurable definition of what is being studied called?
- Dimensional analysis
- Quantitative definition (correct)
- Descriptive measurement
- Qualitative descriptor
Sampling bias occurs when which of the following happens?
Sampling bias occurs when which of the following happens?
- The sample size is too large to manage effectively
- Certain members of the population are less likely to be included (correct)
- The demographic variables are not analyzed properly
- Every member of the population has an equal chance of being selected
Interviews and observations are classified as which type of measurement?
Interviews and observations are classified as which type of measurement?
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What does the peer review process typically involve?
What does the peer review process typically involve?
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Study Notes
Independent Variables
- An independent variable is the factor that is changed or manipulated in an experiment.
- It is the variable whose effect is being studied.
Quantitative Measurements
- A quantitative measurement is a precise and measurable definition of what is being studied.
- It involves numerical data that can be analyzed statistically.
Sampling Bias
- Sampling bias occurs when a sample is collected in a way that makes some members of the intended population less likely to be included than others.
- This can lead to inaccurate or misleading results because the sample is not representative of the entire population.
Qualitative Measures
- Interviews and observations are examples of qualitative measures which focus on gathering non-numerical data.
- This data can be descriptive, observational, and subjective.
Peer Review
- Peer review involves the evaluation of research by experts in the field.
- It helps ensure the quality, validity, and ethical standards of research.
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