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Levels of Measurement and Descriptive Statistics

Levels of Measurement and Descriptive Statistics. ~Richard Rivera (aka Rico). What are the Levels of Measurement? . Ratio (e.g., lengths, weights, volumes, capacities, rates): Different categories Rankable categories Constant equal-sized Intervals

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Levels of Measurement and Descriptive Statistics

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  1. Levels of Measurement and Descriptive Statistics ~Richard Rivera (aka Rico)

  2. What are the Levels of Measurement? • Ratio (e.g., lengths, weights, volumes, capacities, rates): • Different categories • Rankable categories • Constant equal-sized Intervals • Absolute Zero (physical significance, the zero actually signifies something) (e.g., temperature in Kelvin, time) • Interval (temperature on Celsius and Fahrenheit, age): • Different categories • Rankable categories • Constant equal-sized Intervals (can be expressed numerically) • Ordinal (e.g.., dominance hierarchy): • Different categories • Categories are rankable • Nominal (a.k.a. attributes) • Different categories (e.g.., sex, species, phylum, location)

  3. Presentation of Entire Distribution of a Variable

  4. Central Tendency and Dispersion

  5. Central Tendency and Dispersion

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