Surveys (vs) Experiments

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What is the main difference between surveys and experiments?

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Surveys collect data through questionnaires or interviews to understand opinions or behaviors, while experiments manipulate variables to determine cause-and-effect relationships.

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Define 'Observational Study'.

Back

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

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Define 'Experimental Study'.

Back

An experimental study is a type of research where the researcher manipulates one or more variables to observe the effect on another variable.

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What is a 'Population' in research?

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A population is the entire group of individuals or instances about whom we hope to learn.

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What is a 'Sample' in research?

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A sample is a subset of the population selected for observation and analysis.

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What is 'Random Sampling'?

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Random sampling is a technique where each member of the population has an equal chance of being selected for the sample.

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What is 'Cluster Sampling'?

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Cluster sampling is a sampling technique where the population is divided into clusters, and entire clusters are randomly selected.

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What is 'Stratified Sampling'?

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Stratified sampling is a technique where the population is divided into subgroups (strata) and random samples are taken from each stratum.

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What is 'Interquartile Range (IQR)'?

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The interquartile range (IQR) is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1).

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What does a Boxplot represent?

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A boxplot visually represents the distribution of a dataset, showing the median, quartiles, and potential outliers.