Mean Median and Mode

Mean, Median, Mode, and Range (Measures of Central Tendency)

  • Mean, Median, Mode, and Range Rap

     

    MEAN:  also called the AVERAGE

    1. All up all the amounts.
    2. Divide your total by the number of amounts.
    • EX:  Find the mean of  (5, 9, 3, 7, 5)
      • Add 5 + 9 + 3 + 7 + 5 = 29
      • Divide by the number of numbers, which is 5.  29 ÷ 5 = 5.8
      • The mean (or average) is 5.8

     

    MEDIAN:  MIDDLE NUMBER

    1. Order the numbers from least to greatest.
    2. Cross off the top number/bottom number until you locate the middle number.
      • If the number of values is even, the median is the average of the two middle numbers.
    • EX:  Find the median of  12, 6, 3, 9, 15, 8
      • Order from least to greatest:  
        3,  6,  8,  9,  12,  15
      • Cross off top/bottom until you get the middle number or the two middle numbers.
      • 3,  6,  8,  9,  12,  15
      • Add  8 + 9, then divide by 2.
      • The median is 8.5

     

    MODE:  (MOST)

    In a set of data, the mode is the number that occurs the most.

    1. Order the numbers from least to greatest.
    2. Find the number that occurs the most.
    • EX:  Find the median of  12, 6, 3, 4, 6, 10
      • Order from least to greatest:  3, 4, 6, 6, 10, 12
      • The mode is 6 because it occurs two times.

     

    RANGE:  

    The range is the difference between the highest and lowest number.

    1. Order the numbers from least to greatest.
    2. Subtract the lowest number from the highest number.
    • EX:  Find the range of:   4, 6, 10, 3, 9, 12, 5, 8
      • Order from least to greatest:  
        3, 4, 5, 6, 8, 9, 10, 12

      • 12 - 3 = 9
      • The range is 9.