Statistical Studies and Data Collection Flashcard Review

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What is an observational study?

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An observational study is a type of research where the researcher observes and records behavior or outcomes without manipulating any variables.

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What is a sample survey?

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A sample survey is a method of collecting data by asking a subset of individuals from a larger population about their opinions, behaviors, or characteristics.

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What is an experiment in research?

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An experiment involves manipulating one or more independent variables to determine their effect on a dependent variable.

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What is the main difference between observational studies and experiments?

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The main difference is that experiments involve manipulation of variables, while observational studies do not.

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What is primary data collection?

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Primary data collection refers to the process of gathering original data directly from sources, such as through surveys or experiments.

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What is secondary data analysis?

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Secondary data analysis involves analyzing data that has already been collected by someone else, rather than collecting new data.

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What is the purpose of a case study?

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A case study is an in-depth analysis of a particular individual, group, or event to explore complex issues in real-life contexts.

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What does it mean to collect data systematically?

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Collecting data systematically means using a structured and organized approach to gather information, ensuring consistency and reliability.

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What is the significance of sample size in research?

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Sample size is important because it affects the reliability and validity of the study's results; larger samples generally provide more accurate estimates.

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What is the role of variables in experiments?

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Variables are elements that can change or be manipulated in an experiment; independent variables are manipulated, while dependent variables are measured.