Samples and Making Predictions

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What is a Random Sample?

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A sample in which each individual or object in the entire population has an equal chance of being selected.

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CCSS.HSS.IC.B.3

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What is a Population in statistics?

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The entire group of individuals or objects that a researcher is interested in studying.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is a Biased Sample?

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A sample that does not accurately represent the population, leading to skewed results.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is the importance of a Representative Sample?

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It ensures that the sample reflects the characteristics of the population, allowing for valid inferences.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is the difference between a Sample and a Population?

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A sample is a subset of the population used to make inferences about the whole population.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is an Inference in statistics?

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A conclusion drawn about a population based on the analysis of a sample.

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CCSS.7.SP.A.2

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Why is it important to include a diverse group in a sample?

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To ensure that the sample represents different segments of the population, reducing bias.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What does it mean to make a prediction based on a sample?

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To use the data collected from a sample to estimate characteristics or behaviors of the entire population.

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CCSS.7.SP.A.2

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What is a Survey?

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A method of collecting data by asking people questions to gather information about their opinions or behaviors.

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What is a Convenience Sample?

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A sample that is taken from a group that is easy to reach, which may not represent the population well.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1