Statistical Questions and Bias Sampling

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What is a statistical question?

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A statistical question is one that anticipates variability in the data and can be answered by collecting data that has a variety of answers.

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What is a non-statistical question?

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A non-statistical question is one that expects a single answer and does not involve variability.

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What is an example of a statistical question?

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How many hours do sixth graders spend on homework each week?

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What is an example of a non-statistical question?

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How many pets does Sarah have?

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What is bias in sampling?

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Bias in sampling occurs when certain members of a population are more likely to be selected than others, leading to an unrepresentative sample.

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What is an unbiased sample?

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An unbiased sample is one that fairly represents the population, where every member has an equal chance of being selected.

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Why is it important to have a variety of answers in a statistical question?

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Having a variety of answers allows for a better understanding of trends, patterns, and the overall characteristics of the population.

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What is the difference between a sample and a population?

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A population includes all members of a specified group, while a sample is a subset of the population used to represent the whole.

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What is a survey?

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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 does it mean to randomly select participants?

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Randomly selecting participants means choosing individuals in such a way that every member of the population has an equal chance of being included.