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9.1-9.3
by Chelsea Gray
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9.1-9.3

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Parameter, Statistics, and Statistical Inference

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Parameter: a number that is a summary characteristic of a population

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Statstic: AKA sample Statistic

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Estimate: AKA sample estimate

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Statistical Inference: The procedures used to make conclusions about population parameters on the basis of sample statistics

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Questions about Parameters

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Parameter 1: population proportion

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Parameter 2: Difference in two population proportions

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Parameter 3: Population Mean

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Parameter 4: Population Mean for paired differences

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Parameter 5: Difference in Two Population Means

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Sampling Distributions

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Sampling Distribution: the probability distribution of a sample statistic, describing how values of a sample statistic vary across all possible random samples of a specific size that can be taken from a population

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Standard Deviation of x: standard deviation of the sampling distribution of the sample mean

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Standard Deviation of p: standard deviation of the sampling distribution of a sample proportion

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Standard Error: estimated value of the standard deviation of a statistic

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