Examlex
____________ are unlikely to occur in regions without volcanic activity.
Experimental Study
A research method where the researcher manipulates one variable to determine if it causes a change in another variable.
Observational Study
A study where the researcher observes and records data without influencing the outcomes.
Self-Administered Survey
A data collection method where respondents fill out the questionnaire on their own, without the direct assistance of a researcher.
Demographic Variables
Characteristics of populations used in social science research, such as age, gender, income level, marital status, ethnicity, and education level.
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