The number of stories in each of a sample of the world's 30 tallest buildings follows. Construct a frequency distribution, using 54 as the lowest class limit for the first class and the class width of...

The number of stories in each of a sample of the world's 30 tallest buildings follows. Construct a frequency distribution, using 54 as the lowest class limit for the first class and the class width of 8.

88   88    109   88   80   69   102  78   70   55   79    85   80   100   60   90    77   55   75   55   54   61   75   64   105   56   71   70   65    72

CLASSES?    FREQUENCY?