Measures of central tendency
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Measures of central tendency

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Introduces students to four measures of central tendency

Introduces students to four measures of central tendency

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Measures of central tendency Presentation Transcript

  • 1. Measures of Central Tendency
    By Tyler Torek
    Statistics
  • 2. Four Measures of Central Tendency
    • Mean
    • 3. Median
    • 4. Mode
    • 5. Range
    These measures help describe data.
  • 6. Mean
    the of a set of the data
    average
    3, 4, 4, 10, 15, 16, 18
    70  7 =
    10
    Just
    add and divide
  • 7. Median
    the number
    middle
    3, 4, 4, , 15, 16, 18
    10
    10 is the median
    Justfind the middle
  • 8. Median
    numbers not in sequence must be ordered
    6, 12, 2, 6, 4
    2, 4, , 6, 12
    6
    6 is the median
  • 9. Mode
    the number that repeats the
    most
    3, 4, 4, 10, 15, 16, 18
    4 is the mode
    The number that appears the most
  • 10. Mode
    there may be more than one mode
    3, 3, 4, 4, 4, 7, 9, 9, 9
    4 & 9 are the modes
  • 11. Range
    the difference between the and
    least greatest
    , 4, 4, 10, 15, 16,
    3 18
    18 – 3 = 15
    Just subtract largest and smallest
  • 12. Find the all four measures of central tendency below.
    1, 1, 3, 7, 11, 13, 20
    Mode
    56  7 = 8
    Median
    Mean
    20 – 1 = 19
    Practice
    Range
  • 13. Bibliography
    Dr. Clark,
    This information was created from memory. No reference sources were needed.