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Deviations of the Mean
 

Deviations of the Mean

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    Deviations of the Mean Deviations of the Mean Presentation Transcript

    • Practice problem
      8f + 6.1 ≥ -14f – 11.9
    • Practice problem
      0.06p – 4 < .05p + 26
    • Deviations from the mean
    • Mean Absolute deviation
    • Measure of spread
      Quantities that measure the degree of variation in data.
      Class 1 Class 2
      _______________ _______________
      RANGE – the difference between the highest and lowest score.
    • Mean absolute deviation
      A measure of spread that shows the difference between these distributions.
      DEVIATION: The difference of each number from the mean
      ABSOLUTE DEVIATION: Absolute value of each number found from the deviation
    • Property of the mean
      “The sum of the deviations of a set of numbers from the mean of a set is 0.”
    • Applying the math
      Table shows the normal mean temperatures in Fahrenheit for each month in San Francisco and Miami.
      A: Calculate the range of mean temperatures for each city.
      B: Use the mean absolute deviation to determine in which city the temperatures are more consistent.