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Lecture Notes for STA 2023 - Statistical Methods with Murphy at Valencia Comm College (VCC)

Notes Information

Material Type:Note
Professor:Murphy
Class:STA 2023 - Statistical Methods
Subject:STA: Statistics
University:Valencia Community College
Term:--
Keywords:
  • Quantitative Variable
  • Distribution
  • Sampling Distribution
  • Unbiased Estimator
  • Sample Size
  • Quantitative
  • Standard Deviation
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NOTES: Sampling Distributions n = sample size x = sample mean = average of a quantitative variable describing a SAMPLE = population mean = average of a quantitative variable describing the POPULATION p^ = proportion of the SAMPLE with trait n traithave which SAMPLE in the sindividual ofnumber = p = proportion of the POPULATION with trait sizepopulation traithave which POPULATION in the sindividual ofnumber = Statistic: a number which describes a sample. Examples: x , xS , p^ , n Parameter: a number which describes a population. Examples: , ? , p Sampling Distribution: The sampling distribution of a statistic is the distribution of values taken by the statistic in all possible samples of the same size from the same population. Unbiased Estimator: A statistic used to estimate a parameter is unbiased if the mean of its sampling distribution is equal to the true value of the parameter being estimated. Example: ( ) ...

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