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Measures of central tendency
 

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 Measures of central tendency Presentation Transcript

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