part 2 -

• Coefficient of variation


  Standard deviation divided by the mean, expressed as a percentage
• Standard score or z score


  Obtained by subtracting the mean from the value and dividing the result by the standard deviation
• Symbol z


  Used for the z score
• Outlier


  An extremely high or an extremely low data value when compared with the rest of the data values
• Stem and leaf plot


  A data plot that uses part of a data value as the stem and part of the data value as the leaf to form groups or classes
• Box plot


  Used to graphically represent the data set when the data set contains a small number of values, involving five values: the minimum value, the lower hinge, the median, the upper hinge, and the maximum value
• Lower hinge


  The median of all values less than or equal to the median when the data set has an odd number of values, or as the median of all values less than the median when the data set has an even number of values
• Symbol LH


  Used for the lower hinge
• Upper hinge


  The median of all values greater than or equal to the median when the data set has an odd number of values, or as the median of all values greater than the median when the data set has an even number of values
• Symbol UH


  Used for the upper hinge