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Indietro

Chapter 1-2

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Termini in questo insieme (19)

  • Range

    Subtract between the maximum and the minimum data entries in the set.

    Range = (Max.data entry) - (Min.data entry)

  • Mean (or average)

    The sum of all the numbers divided by the number of data entries.

  • Median

    The number that lies in the middle of the data set when it is ordered from least to greatest.

    if the data set is uneven then add the two numbers in the middle and divide by 2.

  • Mode

    The number that occurs the most in the data set.

    If two numbers are occur the most in the set it is bimodal.

  • Population mean

    \(\mu=\frac{\Sigma x}{N}\)

  • Sample mean

    \(x=\frac{\Sigma x}{n}\)

  • Population Variance

    \(\sigma^2=\frac{\Sigma\left(x-\mu\right)^2}{N}\)

  • Population Standard Deviation

    \(\sigma=\sqrt{\sigma^2}=\sqrt{\frac{\Sigma\left(x-\mu\right)^2}{N}}\)

  • Uniform Distribution

    All entries or classes in the distribution have equal or approximately equal frequencies.

  • Skewed Left

    The tail of the graph descends to the left.

  • Skewed Right

    The tail of the graph descends to the right.

  • Qualitative Data

    Connected to a person, no description, cannot be counted or measured.

  • Quantitative Data

    Can be measured or counted.

  • Sample

    Sample size within a population.

  • Population

    Collection of a whole population, outcome, or response.

  • Class width

    The amount that is in between each class.

  • What is Statistics

    Collecting, organizing, analyze and interpret data to make.

  • Data

    Observations, responses, or counts.

  • Stem-and-Leaf Plot

    The stem consists all but the last digit of the number, the leaf is the last digit.