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Mean definitions

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  • Mean
    A single value summarizing a dataset, found by dividing the sum of all values by their count; sensitive to extreme values.
  • Average
    A numerical summary representing the central value of a dataset, calculated identically to the mean.
  • Dataset
    A collection of numerical values used for statistical analysis, often summarized by measures like the mean.
  • Central Tendency
    A statistical concept describing how data clusters around a central value, often measured by the mean.
  • Outlier
    An extreme value in a dataset that can significantly alter summary statistics such as the mean.
  • Sample
    A subset of a population used to estimate characteristics like the mean, often denoted with specific symbols.
  • Population
    The entire group of values under study, distinguished from a sample and summarized with different notation.
  • X Bar
    A symbol representing the mean of a sample, written as x with a bar above it.
  • Mu
    A Greek letter symbolizing the mean of a population in statistical notation.
  • Sigma
    A Greek capital letter used to indicate summation of values in statistical equations.
  • N
    A variable representing the total number of values in a dataset, crucial for calculating the mean.
  • Measure of Center
    A value that summarizes a dataset by indicating its central point, such as the mean.
  • Summation
    The process of adding all values in a dataset, often denoted by the sigma symbol.
  • Equation
    A mathematical expression using symbols to represent the calculation of statistics like the mean.
  • Notation
    A system of symbols used to represent statistical concepts, such as x bar or mu for the mean.