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What is random sampling?

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Random sampling is a technique where individuals are selected randomly from the entire population, ensuring that every individual has an equal chance of being chosen.

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CCSS.HSS.IC.B.3

Front

What is stratified sampling?

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Stratified sampling is a method where the population is divided into subgroups (strata) based on shared characteristics, and individuals are randomly selected from each subgroup.

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CCSS.HSS.IC.B.3

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List some commonly used data collection tools in statistics research.

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Surveys, questionnaires, interviews, and observational studies are commonly used data collection tools in statistics research.

Tags

CCSS.6.SP.B.5B

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What are the various data collection techniques used in statistics?

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The various data collection techniques include surveys, experiments, observational studies, and secondary data analysis.

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CCSS.HSS.IC.B.3

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What are the key components of experimental design in statistics?

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The key components of experimental design include control group, experimental group, randomization, replication, and blocking.

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CCSS.HSS.IC.B.3

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How can researchers minimize bias in data collection?

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Researchers can minimize bias by using random sampling, ensuring the sample is representative of the population, and using standardized data collection methods.

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CCSS.HSS.IC.B.3

Front

Define 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.

Tags

CCSS.HSS.IC.B.3

Front

What is the purpose of a control group in an experiment?

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The control group serves as a baseline to compare the effects of the experimental treatment, helping to isolate the impact of the independent variable.

Tags

CCSS.HSS.IC.B.3

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Explain the term 'secondary data analysis.'

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Secondary data analysis involves using existing data collected by other researchers or organizations to answer new research questions.

Tags

CCSS.HSS.IC.B.3

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What is a hypothesis in the context of experimental design?

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A hypothesis is a testable statement predicting the relationship between variables in an experiment.

Tags

CCSS.6.SP.B.5B