Beyond Frequency Distributions and Histograms � Ogives and Other by K1wSY5Jg

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									                    Beyond Frequency Distributions and Histograms – Ogives and Other Creatures

The graph below displays the cumulative frequency of the lengths of phone calls made from the
mathematics department office at Gabalot High.


                        Length of Phone Calls

               40
               35
               30
   Frequency




               25
               20
               15
               10
                5
                0
                    0     6     12    18     24    30     36    42
                               Phone Calls (minutes)

   a. How many phone calls were made from the Gabalot High math office this month?

   b. Estimate the median length of a phone call.

   c. What percentage of phone calls lasted more than 30 minutes?

   d. Construct a boxplot that represents the length of phone calls data.

   e. Make a frequency table for the length of phone calls data.

   f. Plot a histogram of this data.

   g. Describe the distribution of lengths of phone calls made from the math department offices.

   h. Construct a frequency polygon for this data on the same axes as your histogram.

								
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