Stem and Leaf Plot
  A stem-and-leaf plot shows data 
   arranged by place value. You can 
   use a stem-and-leaf plot when you 
   want to display data in an 
   organized way that allows you to 
   see each value.
        Stem and Leaf Example
      Stem  Leaf
            The 5 Number Summary and the
            Box and Whisker plot (boxplot)
        The five number summary is the statistics used to 
           create box and whisker plot. 
        The five number summary consists of :
                    Symbol Name             Description
                    MinX       Minimum      Lowest data value in this sample
                    Q1         Quartile 1   25% of our data is below this and 
                                            75% of our data is above this
                    Med        Median       50% of our data is below this and 
                                            50% of our data is above this
                    Q3         Quartile 3   75% of our data is below this and 
                                            25% of our data is above this
                    MaxX       Maximum Highest data value in this sample
            We compute these with the 1-var Stats
                  DOT PLOTS
      •    A data display in which each data item is shown as a dot 
           above a number line
      •    In a dot plot a cluster shows where a group of data points 
           fall.
      •    A gap is an interval where there are no data items. 
      •    Is this data skewed left, symmetric or skewed right?  How 
           can you tell?
      Graphing The Data
   Notice, the Box includes the lower quartile, 
     median, and upper quartile.
   The Whiskers extend from the Box to the 
     max and min.                 
                                  
                                       
                 m         e          e    u
                 u         l     n    l
                           i          i
                           t     a    t    m
                 m         r     i    r    i
                 i         a     d    a    x
                 n                       
                 i         u     e    u    a
                                         
                 M         Q1    M    Q 3  Mm