AMDM Unit 4 Test Fall 2024

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What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.

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What is the margin of error in statistics?

Back

The margin of error is a measure of the uncertainty in survey results, indicating the range within which the true value is expected to fall.

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How does sample size affect the margin of error?

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As the sample size increases, the margin of error decreases, leading to more precise estimates. Conversely, a smaller sample size increases the margin of error.

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What is an experiment in research?

Back

An experiment is a study in which the researcher manipulates one or more variables to observe the effect on another variable, allowing for cause-and-effect conclusions.

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What is an observational study?

Back

An observational study is a research method where the researcher observes subjects in their natural environment without manipulation or intervention.

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What is the difference between a controlled experiment and an observational study?

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A controlled experiment involves manipulation of variables and control groups, while an observational study involves no manipulation, only observation.

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What is a biased study?

Back

A biased study is one where the design or data collection methods lead to results that are not representative of the population.

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What is a census in research?

Back

A census is a study that attempts to collect data from every member of a population.

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What is the purpose of conducting a Gallup poll?

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The purpose of a Gallup poll is to gauge public opinion on various topics by surveying a representative sample of the population.

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What is the significance of keeping interaction to a minimum in observational studies?

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Minimizing interaction helps reduce the influence of the researcher on the subjects, leading to more accurate and unbiased observations.