Overview
     Frequency distributions & tables
     Relative & cumulative 
      frequencies/percentages
     Graphs
     Describing data
     On a 7pt scale with anchors of 1 (very 
      easy) and 7 (very difficult), how difficult 
      do you think this class is?
         725366
         453665
         625513
    Frequency Distribution Table
     
     Scoresf
     7 1                             Sf = N
     6 5                     N?
     5 5                     Maximum score? 
     4 2                     Minimum score?
     3 3                     Range?
     2 2                     Scores cluster?
     1 1                     Spread of scores? 
           Constructing a Frequency 
           Table
               Scores f
                                                              Scores listed from high to low
               7             1                                     Note: can do it the other way, 
               6             0                                      but it will be easier to check 
                                                                    answers if everyone does it the 
               5             3                                      same way 
               4             1                                List all possible scores 
               3             3                                  between highest & lowest, 
               2             2                                  even if nobody obtained such 
                                                                score
                                                              Notice f is in italics
    Example
         Gender    f
         Men     24
         Women     7
             N  =31
                           Notice: This is on a 
                            nominal scale.