Statistical Inference

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What is the definition of 'sample size'?

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The sample size is the number of observations or data points collected in a survey or study.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is a 'population' in statistics?

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The population is the entire group of objects or individuals considered for a survey.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What does a dot plot represent in statistics?

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A dot plot is a graphical display of data using dots to represent the frequency of values.

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CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

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What is the mean in a data set?

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The mean is the average of a set of numbers, calculated by dividing the sum of all values by the number of values.

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CCSS.6.SP.B.5C

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What is an inference in statistics?

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An inference is a conclusion drawn from data analysis, often about a population based on a sample.

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CCSS.HSS.IC.B.3

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What is the difference between a sample and a population?

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

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is a random sample?

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A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

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CCSS.HSS.IC.B.3

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What is the purpose of statistical inference?

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The purpose of statistical inference is to make conclusions about a population based on sample data.

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CCSS.HSS.IC.B.3

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How do you calculate the mean of a data set?

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To calculate the mean, sum all the values in the data set and divide by the number of values.

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CCSS.6.SP.B.5C

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What does it mean if a sample is biased?

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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.HSS.IC.A.1

CCSS.7.SP.A.1