population inferences

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What is a sample in statistics?

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A sample is a subset of individuals selected from a larger population, used to estimate characteristics of the whole population.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a population in statistics?

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

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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If a survey is conducted with 150 people, what does this number represent?

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This number represents the sample size, which is the number of individuals surveyed.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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How do you calculate the probability of an event?

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Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

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CCSS.7.SP.C.7A

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What is the probability of picking a red or blue marble from a jar containing 2 pink, 6 red, and 4 blue marbles?

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The probability is 5/6.

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CCSS.HSS.CP.B.7

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What is the difference between a sample and a population?

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A sample is a part of the population, while the population includes all members of a specified group.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What does it mean to infer about a population?

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To infer about a population means to make conclusions or predictions about the entire group based on the analysis of a sample.

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CCSS.7.SP.A.2

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What is a biased sample?

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A biased sample is one 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 a random sample?

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A random sample is a sample that is selected from the population in such a way that every individual has an equal chance of being chosen.

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CCSS.HSS.IC.B.3

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What is the importance of sample size in statistics?

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Larger sample sizes generally lead to more accurate and reliable estimates of population parameters.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1